Last week, I got an email from my ISP saying the MySQL storage was so great, it could potentially violate the terms of service. That's not good. Upon poking around in the backend, I discovered that there were over 250,000 spam comments on an article that's not even publicly findable through any links on this site, and 33,000+ registered spam users. Holy #@%&balls, Bat-spam.
I couldn't even delete the spam-banged content because it had so many comments the CMS gave up and cried.