I've had to turn on full moderation on the site. It seems that 1000s of bots are attacking it and posting porn links and various other spam messages. I've blocked all the account that I can find and removed all the content, but over the last few days, I've literally removed 1000s of these messages from about 100 accounts.
Once the attack dies down, I'll resume the creation of accounts and posting without moderation.
Bill