Actually, AOL has a document called TOS for Terms of Service which you must agree to abide by before posting on the discussion boards. The Orioles board is the one I'm familiar with. Just for fun, you could sign up for the free aol trial, go to the board, post something inappropriate, and you will see how long you last.
Once again, the multiple Free Republic users that were banned did not use foul language or post any derrogatory language from their reports. Of course they do not have the liberty of answering your assertion.