Not a bad virus though, a good one! It’s a social experiment called the Indie Virus and it drives traffic to your blog. I caught it straight from the source, “Personified” who started the Indie Virus.
Do visit his site and read all about the virus. It’s been a huge hit on Technorati (if you’re interested in that kind of thing) and if you catch the virus from me, don’t forget to link it to me.