Common sense-
when greeting someone new to the site, say hi, welcome them, explain the rules (the real rules, not made-up rules about "downrating"... well, ok, that's my preference, let's get back to topic...) - but seriously... seriously...
don't, Do NOT. make the first comment on a new person's profile an advertisement for your lounge.
Are YOU MAD? Are you out of your MIND? Do you want the newcomer to leave right back where they came from? Is that the idea? Is the greeting actually a good-bye, we don't want you, we're creeps here!?
Thank you, I just had to get that off of my chest.