I've got a switch I've never turned on... what it does is that if someone responds to a thread and they were the last poster, it appends to the last post rather than create a new post.
I've not turned it on because it's unexpected, and the server shouldn't be too surprising like that. But it does prevent flooding.
Not a problem for one or two posts, but when it's a whole stream of them it certainly makes me wonder about that switch ;)
In English? or even in Polish if its easier.