First, if you're going to talk to a single person, just do it over PMs. Its hard for the other users to talk around you, and it's just obnoxious.
Second, posting purely for the point of racking up posts and gaining ranks is unacceptable. We've got nothing against spam, but don't post things containing only smilies, or things unrelated to anything.
And finally, don't advertise other sites here. If you have a personal MySpace page or something, and you want to put the link in your signature, that's fine. But don't link to your own forums or something.
Other than that, spam away!
Please also know that only admins type in bold red font.