[DarrenHill]

It's not paranoia, it's been a well proven attack vector here that spambots come, post something innocuous, and then return later and edit those posts to drop their payload. We have had a lot of it over the time before we made the change and limited things.

We got so fed up with it and having to repeatedly go hunting and cleaning up the mess that the limitation was implemented.

So if you want to take it out on someone, aim at the spammers who spoil the party for everyone.