It's fake antivirus malware that's very easy to install but hard to remove.(zangolicious?) Apparently run by an Adult company out of Spain
http://innovagest2000.com
Anyhow I removed it from my in laws pc a few weeks ago and have since noticed them flooding, not so much Google(although they are big into group and notebook spam) but MSN and especially Yahoo SE results with redirects to installs. Almost as bad as the the .cn crap that was around a while back.