Shuugo said:
There's that limit because there's a flood on comments without it. And it's a pain to delete them afterwards. There's a few users that would post more than 20 comments in one hour if that limit was lift.

Instead of dealing with the deletion and possible banning I decided to put such a "hard" limit.
I can see why you would something like that, but why only 3? That seems a but low, and did piss me off when I go into a conversation about a pic, why not 5 or 10?