From Bob Balaban: "... just browsing your blog, saw your note on AdAware. I use that occasionally,
but even better is SpyBot Search & Destroy
The big difference is that AdAware scours your system of obnoxious spyware,
where SpyBot can actually immunize your system against a few thousand kinds
of same, so that when you visit a site that wants to download the stuff,
you get a popup message asking if you want to block it. AdAware can only
operate after the fact"