i would flag the hell out of his ad (i have seperate ips so i can get them shut down pretty quick), i would also post "re: such and such bike is a rip off" posts. i might even go as far as spamming his email. i only would do this if the guy is a know flipper asking ridiculous prices, selling sub par items, damaged goods, or some uneducated idiot just asking astronomical prices. i believe in the fair deal, the fair market value, and trying to warn people about the rip offs. everyone can post what they want and ask what they want, well the other side is that everyone can call that person out when its a ripoff. fair is fair but then again i am a CL nazi, so whatever, thats just me.