Right under each post or comment there are buttons to vote.  This allows you to either like or dislike the content of that particular post.   This can also be used to poll your room's visitors on certain choices.


Once a user votes, the like and dislike icons will disappear and be replaced with your vote on that post.  This ensures no user can vote more than once on any particular post or comment.  All votes are final and cannot be changed once they're in.