I am currently developing a board where people can only post using their voice. It has threads; short of replying to someone by recording a new audio clip, you can also engage with a post by clicking a +1 button.
What would be some good ideas for things to add to a board like this? Someone suggested having the server grab the meta tags from mp3 files; someone else suggested waveforms / spectrum analysis. There is a built in playlist tool which can be looped or shuffled for all the posts on a page, and there's views for recent posts and top posts.
Tanami (mr_vile) is also working on a board like this. It will be interesting to see which soundboard is more successful, if any.