Get favicon of any website

It is quite easy to get favicon of any site using google. Look at the code

    http://www.google.com/s2/favicons?domain=example.com

Examples

<img src="http://www.google.com/s2/favicons?domain=google.com" />
<img src="http://www.google.com/s2/favicons?domain=youtube.com" />
<img src="http://www.google.com/s2/favicons?domain=yahoo.com" />

Output