Posts in some forums do not count, such as ones made in the Offtopic Forum.
Also if a mod deletes your posts because of content or because they were spam, or if a thread you have posted in gets moved to OT forum, will all cause your post count to go down.
Also if a mod deletes your posts because of content or because they were spam, or if a thread you have posted in gets moved to OT forum, will all cause your post count to go down.