Ok I've made some changes to PMs and most people this should not affect.
What I've done is two things!
First off, I've made it where you can only send a PM to two members at once right now. This might be too restrictive and if so, please let me know!
Secondly, I've made it where when PM'ng you will have to enter some code (letters that are displayed) until you have 10 posts. It's not real hard and I think it's a good in between from stopping what happened today. I may change this and make it where you have to have one post before you can PM.
Let me know what you think and I'm working on installing some spam software to check if the users are coming from a known spam site!
Thanks once again for everyones understanding!