This is still pretty new information to me, I really enjoy the possibility of firing up a semantic search with every tweet in a side window (for those that opt in). It's fun meeting new people that are talking about the same concepts as myself, at the same time.

ps Robert, go check out http://victus-imm.heroku.com (or directly to your page) to see what we're up to. We still have issues handling large lists due to the streaming api restriction (we're in the queue at least, thanks for pointing me to the right person to talk to about twitter api).