It definitely works there because it's generally not a discussion. Questions with the best answers higher.
If I was going to add it, I'd do a up / down vote thing but rather than the promotion system Slashdot have, which I agree wouldn't really work with Beehive's threaded structure, I'd probably go with something like Eurogamer's comment system where you have a user definable threshold (which would be a combination of total score and number of votes) and if the score goes below this the posts are hidden. Kinda like a social ignore list.
(This of course would be optional and you could choose not to set a threshold)
OMG STILL NO EMOTES
<uncaches things>
Oh wait, I adblocked that fucking purple spanking thing and it seems to have applied generally.
Give it time, ken. Give it time.