wjosten,
is mistaken, his link is to remove the MacDefender malware, which MacKeeper is very close to being, but it's not the same.
CMCSK,
supposedly running the MacKeeper removal by their method results in phishing of information etc before it departs.
dmax2500
This developer here has a more through removal method and information, I'd advise people recommend and use his advice instead of listening to anything from those horrid developers at MacKeeper.
http://applehelpwriter.com/2011/09/21/how-to-uninstall-mackeeper-malware/
Also PLEASE contact Apple to remove this crap, there is a link on Phil Stokes page.