On Zoochat we express our 'likes' and 'dislikes' with (mostly) informed posts and comments, not by pushing buttons without effort or the slightest thought to what it is about. While I use Facebook, the last thing I would want would be for Zoochat to take things from there.
i don't want to get rid of the forums but i think it is a good idea 'coz you might just 'like' a post and have nothing to add on it.