@wtf I have a couple suggestions based on my use so far:
1. Rather than "days ago" on how long ago something was posted, put the actual date so I don't have to do mental math to figure out when I wrote something
2. A "like" function is essential . . . a "dislike" function is appreciated.
3. Increase the contrast on the posting buttons - they're practically invisible. Clean is one thing, but it still should be user friendly.
4. Allow replies to replies, and put the most recent replies at the bottom, rather than the top. Doing it the other way breaks up the flow of conversation.