I have tried a few products over the years, software to eliminate spyware (riiiiight), adware, keep my IP sig invisible, etc, but lately I decided to upgrade to Ghostsurf 2005 platinum, and I am very impressed. Ghostsurf supposedly has their own private non-monitered hubs on their newest version, and I can not only use their hubs as my originating IP, but I can encrypt my requests from my computer to their hub (this eliminates my ISP or Big brother from spying on me -- not that I do anything I should be worried about, but...). FINALLY, a product that let's me hook up to my secure addy securely, taking the weak link out of encrypted email addy's, at least for a while.
I run all sorts of spyware programs as well, and the spyware program they include recently located a keylogger program on my computer that was sending "somebody" all my keystrokes -- bank passwords, e-mail passcodes, etc.
If you are tired of wondering if somebody may be out there watching you, somebody is. Eliminate it with Ghostsurf 2005 Platinum, or regular Ghostsurf 2005 if you cannot afford the full version. www.tenebril.com