I've been hurt here before as well. Hurting people sometimes lash out and hurt other people and there are a lot of hurting people on PC. I've had people lash out at me on threads, in chat, and I've lashed out at people myself, though I'm not proud to admit it. This is a safe place in that you will always find people with whom you can identify and what is said here stays here, but just as in real life there may be people who are going to lash out and say stupid things. Best thing to do is try to have grace (even though it's difficult because you are hurting as well) and try to think of how angry/hurt inside they must be to say such things to another person. It isn't easy, but sometimes it helps a little. Then come back to the BPD forum and talk to us.
I hope I haven't made you feel worse; I'm really trying to help because I want you to stay!