From: beware phishing on

According to Scroogle, the recent malware visit they are suffering from
may be caused by "tabnapping": http://www.scroogle.org/botnote.html
(see latest footnote).
Even if it's not the case for Scroogle, tabnapping is best avoided.

-lots of links about tabnapping here:
https://ssl.scroogle.org/cgi-bin/nbbwssl.cgi?Gw=tabnapping

-more here:
http://www.darknet.org.uk/2010/07/tabnapping-attack-on-the-increase/
http://preview.xrl.in/5tjn (Computerworld)

*The solution is to always close unused browser tabs when not in use*
to prevent a tab being hijacked, especially if the tab is to a site where
you log on (online banking, Facebook, webmail accounts etc etc etc).