Camaro5, Camaro6, and Corvette7 are essentially a single website. The membership is shared between all 3 sites, so your username & password from any one of them will work on all. Every Corvette7 member is, in fact, a Camaro5 member & vice versa (and likewise for Camaro6). We have some ideas on how integrated/isolated things should be between the sites, but thats mostly an administrative thing.
That said, nobody can go around spaming inboxes selling stuff. Go back to your inbox, report the PM (the
icon in the upper right corner) and we'll deal with them.