Can StackExchange restrict access to its content? We are having a lot of fun at StackExchange sites and creating a huge base of knowledge. However, one sad day we may wake up and see that: SE can be only accessed by predefined set of people (for example: "only for SE employees", "only for the US army", "only for users with at least 1000 reputation", "only for active and successful users") SE demands payment for accessing Q&amp;A base I can only read those parts of the SE Q&amp;A base which I helped to create (posted, edited, voted, etc). SE allows its knowledge only to be used for certain goals (ex: "you may not consult StackOverflow create a computer program which will be sold to someone", "you cannot learn for your university exam from SE", "you cannot use RPG SE to help you with your job as a professional game master", "you cannot print and sell a book with SE posts", "you cannot ask Law SE for how long you should put that guy into prison") [yes, I know it's hard to prove] SE "buys" the knowledgebase for bazillion of dollars from the people all around the world and then does some of 1), 2), 3), 4). Of course, StackExchange (the company) can be shut down and their servers turned off/fail. This is not the problem which I am asking about. So, can StackExchange restrict access to its content (for example by doing one of the above options)? Note: I am afraid that asking about each of those 5 points would qualify my question for closing as "too broad", therefore please focus on the question in title.
StackExchange probably has no obligation to continue to provide the content, however StackExchange probably cannot stop copies from continuing to be used, reproduced, etc. from the Terms of Service (click on Legal below): You agree that all Subscriber Content that You contribute to the Network is perpetually and irrevocably licensed to Stack Exchange under the Creative Commons Attribution Share Alike license. Bold added by me. The content is licensed to SE, unlike some sites where you transfer ownership of content to the site. SE can continue to use your data, but you still own the copyright. They can't limit your use of your own content, because you remain the owner. SE cannot use your content in a way that violates the Creative Commons Share Alike License, but I don't see any limitations on how SE makes your work available, including to a limited audience. They could, for example, probably move to a paid model because there are no commercial exclusions (unlike the Creative Commons non-commercial variations of the license). You could post a copy of SE content elsewhere, as long as you adhere to the requirements: In the event that You post or otherwise use Subscriber Content outside of the Network or Services, with the exception of content entirely created by You, You agree that You will follow the attribution rules of the Creative Commons Attribution Share Alike license as follows: You will ensure that any such use of Subscriber Content visually displays or otherwise indicates the source of the Subscriber Content as coming from the Stack Exchange Network. This requirement is satisfied with a discreet text blurb, or some other unobtrusive but clear visual indication. You will ensure that any such Internet use of Subscriber Content includes a hyperlink directly to the original question on the source site on the Network (e.g., https://stackoverflow.com/questions/12345) You will ensure that any such use of Subscriber Content visually display or otherwise clearly indicate the author names for every question and answer so used. You will ensure that any such Internet use of Subscriber Content Hyperlink each author name directly back to his or her user profile page on the source site on the Network (e.g., https://stackoverflow.com/users/12345/username), directly to the Stack Exchange domain, in standard HTML (i.e. not through a Tinyurl or other such indirect hyperlink, form of obfuscation or redirection), without any “nofollow” command or any other such means of avoiding detection by search engines, and visible even with JavaScript disabled. Making a complete copy of SE would seem to be within the terms of the license, as long as all the requirements for attributing, linking, etc are met, so you could mitigate the risk of the SE material going away in that manner.
You give SE 2 licences The CC-BY-SA one and the one that goes “the perpetual and irrevocable right and license to access, use, process, copy, distribute, export, display and to commercially exploit such Subscriber Content … as reasonably necessary to, for example (without limitation):”. SE can choose which one it uses. Even though the enumerated cases are “without limitation”, they indicate the general area where the 2nd licence would be “reasonably necessary”. If SE used it outside that domain and did not comply with CC-BY-SA they would arguably be in copyright violation.
Does Amazon prohibit a family of adults from sharing a single Amazon account? No, or at least it seems unlikely. As outlined in my answer &amp; comments on Law Meta, a domestic or family-oriented character is palpable in the clause. That weakens the notion that Amazon's intent is to preclude scenarios which are of a personal-domestic nature and short of commercial/sublicensed use. The language &quot;You are responsible for [...] restricting access to your account&quot; seems more permissive than something akin to &quot;only you are allowed to access your account&quot;. The former language is consistent with the term &quot;non-exclusive&quot;, which otherwise seems to have no relevance or purpose in the clause. Users' ability (if any) to enter multiple payment methods with different names (i.e., card holder name) could be an additional indication that the scenario you have in mind is acceptable to Amazon. It is easy for a company to implement a validation for the purpose of identifying significant discrepancies of holder names and/or to have the user confirm that all payment methods refer to one same owner. The latter approach is more conclusive for scenarios where a woman has changed names as a result of getting married or divorced. The fact (?) that Amazon declined to include that simple validation weakens the notion that the company is genuinely interested in sticking to a rule of one-person per account.
Getting permission from the game owner would be a sensible approach. If you get it, great. Then you could do it with the owner's blessing. It's possible to do your write up without the owner's permission, but then you have to be much more careful. For instance, the names of games cannot be copyrighted. No one can prevent you from writing "A Guide to Bridge," or "A Guide to Chess," etc. On the other hand, some games are trademarked, in which case you will need to attach a TM (trademark) symbol when referring to them. In this case, see a lawyer. You are also allowed to discuss the game itself "in your own words," but you must be careful not to "plagiarize" anything from the rules, or the official game description. That is, while you can refer to specific aspects of a game, such as building houses and hotels, the leash on copying is fairly short, as little as five words. This does not refer to five words in a common sequence referring to a single thought like "The United States of America," but it could refer to five words in an original or unusual sequence such as "I think therefore I am," by Rene Descartes, or "X houses and Y hotels," where the numbers X and Y define the number of houses and hotels in a certain board game trademarked (I believe) by Parker Brothers.
are there any safeguards you could take to preemptively block such behavior, such as a disclaimer inside the book cover that reads something like The safeguard you outline would be overridden as soon as the author enters any contract that requires assignment of copyright. (I would not delve in the differences between licensing and copyright assignment because that hypothetical author is dealing with a contract of adhesion which readily requires assignment; the author has no option to change the ToS to allow for licensing only) Under contract law, one of the essential prerequisites is that the conditions of a contract be entered knowingly and willfully. By deliberately clicking on a ToS page to move forward with the uploading a copyrighted work, the author is signaling his awareness and acceptance of the ToS. The fact that the author chose not to read the ToS is irrelevant and very unlikely to strike whatever entitlements the website owner formulated in the accepted ToS. For the same reason, the author's safeguard disclaimer does not bind the website owner: It cannot be said that the website owner was aware of that disclaimer at the time of the formation of contract between the author and the website owner. That is, the website owner did not knowingly and willfully accepted the author's safeguard. The website owner is not even expected to know about any safeguards which one of its potential user intends to establish. The length of a ToS document is also irrelevant because the website owner has the valid argument that "the user-author could have skimmed through the ToS or do a search (via Control-Find) of keywords such as 'copyright' or 'property', whence any allegation of 'inadvertent' assignment of copyright is untenable". Is there a way to protect your IP from inadvertently being licensed/stolen/assigned via TOS "agreements", without having to waste your life reading huge one-sided online "contracts" that are "subject to change without notice" anyway? Yes. That consists of not uploading one's works in such platforms. In contract law that would be expressed as "declining an exchange of considerations". There are many other alternatives for an author to promote his work without being required to assign copyright.
First of all derivative works are not exactly "illegal". They are fully legal if the owner of the copyright in the original work has given permission. If no permission has been given, they may be copyright infringements. But they may fall under an exception to copyright. Under US law, the most common exception is "fair use". See this question and answer for more on fair use. But particularly relevant in this case is that a parody is usually a fair use, although as in every fair-use decision, there is pretty much no clear-cut, hard&amp;fast rule on what is and is not fair use. In the UK and much of the EU (or maybe all of it, I am not sure) there is a somewhat similar concept known as "fair dealing". It is also an exception to copyright. So it is possible that such works fall under fair use, fair dealing, or another exception to copyright, or that the rights-holder has given permission. Secondly, copyright infringement is a tort, not a crime, under most circumstances. It is enforced when, and only when, a copyright-holder chooses to take action, sending a take-down notice or copyright complaint, of filing suit for infringement. Some rights-holders choose as a matter of policy not to take such actions, thinking that such derivative works actually benefit them. That is their choice to make. Some rights-holders don't have the time or money to track down and take action against most infringements, and will only act if they think the derivative work will in some way cost them a lot of money or harm their reputation. Some rights-holders may just not have heard, yet, of specific possible infringing derivative works. As for Acta2, it has not yet been approved, the Wikipedia article linked in the questions says: In order for the text of the directive to become law in the EU, it must be approved by the European Council on 9 April 2019 The article also mentions significant continuing opposition. If it is approved, it is not clear, to me at least, how it will affect sites hosting such content, nor how it will interact with the copyright law of individual EU nations. If approved, it will no doubt take some time before enforcement is widespread. And of course it will only apply when EU law applies. If both site and author are outside the EU -- say if both are from the US -- it seems that it could not apply.
The argument would have to be either a derivative work under copyright, or a trade dress/trademark claim. Neither sounds very solid at all. Neither copyright nor trade dress/trademark protect ideas like a TV format. They can only protect very similar expressions of an idea that necessarily flow one from the other and, for example, the game mechanics can't be protected by copyright.
Yes and no. [note, the following is all written about US law. In other jurisdictions laws are, of course, different (though usually not drastically so.)] In the US there are (at least) three different bodies of law that might apply to code: copyright, patents, trade secrets. Copyright covers original expression. Anything you write is automatically, immediately protected under copyright. The copyright applies to the code itself, and anything "derived" from that code. It's up to the courts to decide exactly what "derived" means. One case that's long been viewed as a landmark in this area is Gates Rubber v. Bando Chemicals. The Court of Appeals for the tenth Circuit decision includes a section titled: "The Test for Determining Whether the Copyright of a Computer Program Has Been Infringed." Note that you can register a copyright, and that can be worthwhile, such as helping recover some damages you can't otherwise. Patents are quite different from copyrights. Where a copyright covers expression of an idea, a patent covers a specific invention. Rather than being awarded automatically, a patent has to be applied for, and awarded only after the patent office has determined that there's no relevant prior art to prevent it from being awarded. A patent, however, covers things like somebody else independently discovering/inventing what's covered by the patent. A trade secret could (at least theoretically) apply to some process or procedure embodied in the code. A trade secret mostly applies to a situation where (for example) you're trying to form an alliance with some other company, and in the process tell them things you don't tell the general public. If you've identified the fact that what you're telling them is a trade secret, and they then tell a competitor (or the general public, etc.) or more generally use that information in any way other than the originally intended purpose, it could constitute a trade secret violation. As a side-note: patents and copyright fall under federal law, so they're basically uniform nation-wide. Trade secrets mostly fall under state law, so the exact details vary by state. Absent a reason to believe otherwise, I'd guess your interest here is primarily in copyright infringement. The key here would be showing that one piece of code was derived from the other. That is, it specifically would not apply in a case where there were only a limited number of ways of doing something, so anybody who wanted to do that had to use one of those ways. Since this would not indicate actual derivation, it would not indicate copyright violation.