Hi,
Remember the revision limit on page deletions that was hacked in to prevent Wikimedia grinding to a halt every time someone tried to delete a large page?
Well, give someone a feature and they will abuse it in ways you never thought possible. Bots are now being used to add thousands of revisions to pages to make them un-deleteable. See the history of the English Wikipedia's Main Page for an example.
Just thought you should know.
Thanks,
-Gurch