Like/Dislike sounds interesting, but how would the rating then be displayed? Still in star format or "Facebook style" ?
How would you express a neutral feeling?
It's to see how much activity it's getting. If everybody was neutral nobody would vote. That means the creators would think it's not getting very much activity.
I've implemented the "is typing a message" statuses
and I'm working on getting some nice emoticons to use for the chat.
most emoticons are 16px or larger so I've got someone doing some custom ones for us.