I posted this awhile back but here are better definitions why they are considered bad or just plain thieves
along with legitimate spyware/adware cleaners
http://www.spywarewarrior.com/rogue_anti-spyware.htm
Lobos
along with legitimate spyware/adware cleaners
http://www.spywarewarrior.com/rogue_anti-spyware.htm
Lobos