Anyone know why this is? I am spamming a message to about 50 users, then my user will get deleted, anyone know why this might be happening?/
That's like asking why you went to jail after robbing a bank!!! Use your head before asking that sort of question, buddy!
Read the posts again, your question was answered. You yourself said you were spamming. So here it is again in language you should be able to understand: You were banned for SPAMMING. Enough said.
I'm looking at some high profile blogs like Howard Stern's, and it seems like he has to erase new spam messages ever 30 minutes or so.