title: How to capture screenshot of specified website?
body: <p>I want to know technique to capture screenshot if I have a url list of those sites like <a href="http://fastflip.googlelabs.com/" rel="nofollow noreferrer">google fastflip</a>. What technology or techniques require for this kind of task. If this technique available in rails it would be great.</p>
  
  <p>Thanks</p>