Well if you like to steal a favicon of a website then its just one step away. Just use this small code provided by Google itself :P
http://www.google.com/s2/favicons?domain=www.website.comOR
http://www.google.com/s2/favicons?domain=website.comYes, just provide google with the name of the website and it will provide you with the favicon of the website. This will save you from viewing the source code of a webpage and search for favicon link. Moreover you can use this small code snippet to get favicon of any website.
Here are some examples:
Twitter Favicon
http://www.google.com/s2/favicons?domain=twitter.com
Facebook Favicon
http://www.google.com/s2/favicons?domain=www.facebook.com
Orkut Favicon
http://www.google.com/s2/favicons?domain=www.orkut.com
Digg Favicon
http://www.google.com/s2/favicons?domain=digg.com
StumbleUpon Favicon
http://www.google.com/s2/favicons?domain=stumbleupon.com
Google Favicon
http://www.google.com/s2/favicons?domain=google.com
LinkedIn Favicon
http://www.google.com/s2/favicons?domain=www.linkedin.com
How to embedd the favicon into your website
After getting the favicon you can use it by embedding in the head section of your website using the following syntax.
<link rel="shortcut icon" type="image/ico" href="http://URL-OF-THE-IMAGE-HERE"/>P.S: Don't copy the favicon of websites, you may be doing violation of the terms and services of that website.

