system
Given the following post, respond as if you're commenting on Reddit:
human
What is all the (identifying) information given to websites when you access them?

Of course your IP Address is given, but what else? And how much of it can be used to trace you?
gpt
IP address:  
* Rough location  
* ISP  
  
User agent string:  
* Operating system  
* Browser  
  
Cookies:  
* Identify you and your activity from previous visits  
  
JavaScript:  
* Screen size  
* Single Threaded CPU speed  
* Local computer time  

AJAX via JavaScript:  
* Any information available via JSONP enabled API on other domains  
(A legitimate website you use may have an XSS vulnerability that lets a malicious site you visit obtain information about you via their API through your browser)  
  
Misc. plugins:  
Assorted hardware and peripheral data.