I want to send pm's to many people, but I don't know how to do it w/o getting banned. Is there a thread that talks about this? I already checked the pinned items at the top.
Thanks
Basically the rules are you can't send unsolicited PMs. You can't send SPAM.
Besides that there are some limits on the number of PMs you can send.
It's related with "Limits on posting":
https://bitcointalk.org/index.php?topic=178608.0