Here are the ideas that were submitted to BrainSwarm in the first week. Remember, if you if you don’t submit an idea you can still comment and vote on ideas.
general purpose futures market
Use web browser caches and DHT to lower server load
Like seti@home but with profits
Audio-based ‘social media’-type network
Haptic feedback for spacial interfaces
And here’s one idea that’s in progress: Seattle Eso Zone 2011.