Microsoft's AntiSpyware is okay, but I doubt I'll continue using it. I use TightVNC on my intranet and MSAS considered TightVNC to be spyware. At least it didn't automatically remove/ban TightVNC, I was worried about that. I think I'll stick with what I'm more familliar with and had no problems with, and that's AdAware. I've been using AdAware for about ten years now (okay, only a year but it feels like ten) with no problems.