[t b u k]

I like.

I'd say, if people are going to abuse this... it'll be obvious, you'll have a bad repuation and you won't gain much in the long run.

It'll be nice if you're encouraged to make a more in-depth reply to topics, but something like 'my opinion is uh uh uh uh uh uh IDK LOL LOL LOL LOL' is pretty obvious, and you won't be liked for it. xD