Just when I spent the entire week rooting out the terrorist network lodged in my two computers -- spyware, malware, and other hijack programs -- a report comes out that 1/3 of the computers out there might be infected with spyware.
Spyware sucks. Not only can these things track your browsing, certain malevolent programs can register your keystrokes and facilitate identity theft and credit card fraud.
I've been using Spybot, Bazooka, and Ad-aware to clean up my computers. Be vigilant. And as an extra precaution, don't download Kazaa, which is bundled with Spyware. Or PartyPoker for that matter.