91hebasu was referring to the very disagreeable process where some people engineer posts to their topics to take them to the top of the hot list.
Personally I don't see why anyone would be that moronic to do that, but without a doubt some do.
People might ask, what does it matter, well apart from feeding personal ego, it also clutters up the recent posts and genuine hot topics so other people miss posts that they would otherwise have seen.
Maybe a little wordy explanation on my part, but it is one of the things that annoy members and its against the spirit of the T & C's and creates work to monitor & police it.
So generally speaking its NOT good behaviour and can have consequences.
Personally I would take 91hebasu's suggestion to heart one and all.