While the ideas implimented in Microsoft's "AntiSpyware" are good they are not perfect. One downside is Microsoft's program didn't find several spyware programs that competing software managed to track down, even with the latest definition file (update file, whatever you want to call it). If Microsoft can manage to find all spyware on one's system and manage their "spyware server" (which is a great idea by the way) they will have a great product. I will give Microsoft the benefit of the doubt because this is still a beta. When the offical version is released I will be expecting more.

But give "AntiSpyware" a chance. Just don't use it as your sole spyware removal program.