While i was inspecting facebook html code through with firebug in Chrome, i found this tag :
<a href="http://www.facebook.com/?ref=logo" title="Home" bitly="BITLY_PROCESSED"/>
What is the bitly attribute? Anyone has an idea?
:)
It gets added by the bit.ly plug-in (and perhaps some others) when it examines links (see http://bit.ly/pages/tools form more on that). If you don't have that plug-in yoruself, then it may be that someone somewhere along the line did.