Section 25(a) can be invoked for any breach of ProBoards' Terms of Service. Usually, it's because a board allows posts that are not acceptable for people as young as 13 (PG13 rule). It can, however, be invoked for any reason ProBoards' feels is appropriate. Best thing to do is become familiar with the Terms of Service and be sure those terms are followed on your forum

OLD,SICK and CREEPY lisa and kent trying to shower 13 year olds with porn, what would you expect from a shit canned ex-teacher and a geriatric janitor