The safest thing to do with phone numbers, I find.. is:
Actually talk to the person in the chatroom, or in private message, first, to learn a little about them.
Then.. PM them your phone number in their PM box or pc them in the chatroom, and give it to them..
A few forum members know my number, but, this was done only after really getting to know them as people. I wouldn't just go posting my number, on a thread, being like "Hi, I'm Mitch, call me at 717-555-1212" (Lancaster's real area code, but NOT my phone number, btw)
My advice to the posters who posted your numbers: Take them down and pm each other the number. It's safer. Or.. better yet, pm or pc each other in the chat, and talk first, before even doing a phone call. Get to know each other a bit.
I hope this turns into a tickle meeting for you both. Good Luck.
Mitch