The spam is gone for now. I can't even go offline for a few days without being inundated with spam. I'm afraid we're going to have to change things so that new users must be personally approved by me. Despite the anti-spam controls I have put into place, they always find ways around them.
There's no point in replying to the spammers. Just try to ignore them until I have a chance to come through an clean it up. Feel free to send me a private message if you see spam that goes unchecked for more than a day.