I agree we have to be careful about who we report. I've had some persnickety guests that, while a pain, weren't really bad. I'd only report a real **** who damaged my property or violated our contract with intent.
Guestchecker does offer a way for those who've been listed as bad renters to protest the inclusion of their name. You can find the info on their site.
Hello from the offices of GuestChecker!
My name is Shane. I am one of the founding members of GuestChecker. There has been a lot of talk about our service on the HomeAway Forums. I would like to open the field and answer comments, questions, concerns about our service on our new forum here: http://community.homeaway.com/message/10427#10427
I look forward to helping a community that has help us so much over the last 12 months.
Talk with you soon!