It's spyware. I get it on 4shared. There are 4 boxes, from
left to right:
Facebook spyware
Google spyware
Twitter spyware
Dunno, probably KGB
Analyzing the Twitter icon:
http://www.4shared.com/servlet/signin/twitter?fp=http://www.4shared.com/account/home.jsp"
Which will allow 4Shared to:
Read Tweets from your timeline.
See who you follow, and follow new people.
Update your profile.
Post Tweets for you.
IOW, be you, sell you, fuck with you.
Just put google, twitter, facebook and KGB in your hosts file.
You will be safe(r).
[]'s
--
Don't be evil - Google 2004
We have a new policy - Google 2012