title: how does a service like feedly obtain the rss feeds from a website when the website URL is entered into the search box(not the feed url
body: <p>This may be a dumb question , not a completely programming related question but bear with me as I am trying to learn.</p>
  <p>How does <a href="http://www.feedly.com" rel="nofollow noreferrer"><strong>FEEDLY</strong></a> retrive the feeds / news from a website just by entering the website URL into the search box.</p>
  <p>For instance , I entered <a href="http://www.inspirationfeed.com" rel="nofollow noreferrer">http://www.inspirationfeed.com</a> into the search field and the AJAX call / query string which was passed was</p>
  <p><a href="http://cloud.feedly.com/v3/search/feeds?q=http%3A%2F%2Finspirationfeed.com%2F&amp;n=20&amp;ck=1381664838936" rel="nofollow noreferrer">http://cloud.feedly.com/v3/search/feeds?q=http%3A%2F%2Finspirationfeed.com%2F&amp;n=20&amp;ck=1381664838936</a></p>
  <p>It returned a JSON as the response</p>
  <pre><code>{&quot;results&quot;:[{&quot;deliciousTags&quot;:[&quot;Design&quot;,&quot;inspiration&quot;,&quot;Diseño&quot;,&quot;Web Design&quot;,&quot;webdesign&quot;,&quot;graphic design&quot;],&quot;lastUpdated&quot;:1381561980000,&quot;score&quot;:27531.265625,&quot;website&quot;:&quot;http://inspirationfeed.com&quot;,&quot;title&quot;:&quot;inspirationfeed.com&quot;,&quot;subscribers&quot;:1772,&quot;language&quot;:&quot;en&quot;,&quot;velocity&quot;:16.3,&quot;feedId&quot;:&quot;feed/http://feeds.feedburner.com/inspirationfeed/BTLD&quot;,&quot;description&quot;:&quot;be inspired!&quot;},{&quot;deliciousTags&quot;:[&quot;DESIGN&quot;,&quot;Inspiration&quot;],&quot;lastUpdated&quot;:1381474380000,&quot;score&quot;:48.0,&quot;website&quot;:&quot;http://inspirationfeed.com&quot;,&quot;title&quot;:&quot;inspirationfeed.com » Inspiration&quot;,&quot;subscribers&quot;:48,&quot;language&quot;:&quot;en&quot;,&quot;velocity&quot;:4.7,&quot;feedId&quot;:&quot;feed/http://inspirationfeed.com/category/inspiration/feed/&quot;,&quot;description&quot;:&quot;be inspired!&quot;},{&quot;deliciousTags&quot;:[&quot;design&quot;],&quot;lastUpdated&quot;:1381479900000,&quot;score&quot;:294.7439270019531,&quot;website&quot;:&quot;http://inspirationfeed.com&quot;,&quot;title&quot;:&quot;inspirationfeed.com » Articles&quot;,&quot;subscribers&quot;:27,&quot;language&quot;:&quot;en&quot;,&quot;velocity&quot;:11.7,&quot;feedId&quot;:&quot;feed/http://inspirationfeed.com/category/articles/feed/&quot;,&quot;description&quot;:&quot;be inspired!&quot;},{&quot;deliciousTags&quot;:[&quot;Photography&quot;],&quot;lastUpdated&quot;:1381129620000,&quot;score&quot;:17.0,&quot;website&quot;:&quot;http://inspirationfeed.com&quot;,&quot;title&quot;:&quot;inspirationfeed.com » Photography&quot;,&quot;subscribers&quot;:17,&quot;language&quot;:&quot;en&quot;,&quot;velocity&quot;:0.7,&quot;feedId&quot;:&quot;feed/http://inspirationfeed.com/category/photography/feed/&quot;,&quot;description&quot;:&quot;be inspired!&quot;},{&quot;deliciousTags&quot;:[&quot;Little Bit of Everything-Amatuer&quot;],&quot;lastUpdated&quot;:1381396020000,&quot;score&quot;:109.16442108154297,&quot;website&quot;:&quot;http://inspirationfeed.com&quot;,&quot;title&quot;:&quot;inspirationfeed.com » Blogging&quot;,&quot;subscribers&quot;:10,&quot;language&quot;:&quot;en&quot;,&quot;velocity&quot;:0.5,&quot;feedId&quot;:&quot;feed/http://inspirationfeed.com/category/articles/blogging/feed/&quot;,&quot;description&quot;:&quot;be inspired!&quot;}]}
  </code></pre>
  <p><strong>WHAT I UNDERSTOOD</strong></p>
  <p>1)Based on the key <code>deliciousTags</code> , feedly generates the # tags
  2)Based on the key <code>score</code> , feedly arranges the different feeds / news URLS available from the site in a top down order</p>
  <p><strong>WHAT I DIDNOT UNDERSTAND</strong></p>
  <p>1)How does feedly get the news feed / rss URL by just entering the website URL (<strong>EXAMPLE :</strong> <code>&quot;feedId&quot;:&quot;feed/http://feeds.feedburner.com/inspirationfeed/BTLD&quot;</code>)</p>
  <p>2)What type of a web service needs to be written for such a thing. Does it need server side scripting to do a deep search of the website in question and retrieve the feed URLS ? Can the feed URLS be fetched on the client side itself using JQuery / Javascript ?</p>
  <p>Once again , thank you for taking time to read the question.</p>