Or careless...
I usually read up on new software in www.download.com.
Sydoctor is good but very hard to crack.
Webroot spysweeper is good too but takes up a lot of resources. Use
if you have a good comp that can afford the strain.
Counterspy and Microsoft spywarecleaner look the same to
me...
Spybot Search and destroy, free program, free updates, real time
protection, I like it a lot.
Lavasoft Adaware, great cleaner, but no real time protection unless
you buy the full version. I'm too cheap to spend... I use it only
for cleaning.
If you are an advanced user, try out bazooka... I found it to be
confusing and rather troublesome to search for the appropriate
steps to clean the infections manually.
There are more, but i haven't tried them yet...