doesn't really matter what the medium is, what the forum is called, or where you live.
the point, is, it is never safe to give personal information to people you don't know, on the internet or anywhere else, and is especially not safe to meet up with someone you don't know.

people are messed up, people are malicious, people are just evil. be they cops or just some scumbag.

i don't know what would make anyone think it was an okay idea to solicit personal information or anything illegal on a public message board, or in a chatroom, but they do.

would you go down to the local convenience store and put up a sign that said "Hey, I'm looking for some illegal contraband. If you can help me, here's how to find me."?