All of these Twitter apps are really just a diversion. The rest of us can hack with a little more peace of mind since our potential competition is off in the echo chamber.
I used to think like that as well before I launched TweetLinx - I was working on my news engine with peace of mind in my personal echo chamber when I realized that I might be able to make use of Twitter's buzz to introduce people to my company and technology. You can always expand your product line later - if there's easy traffic, sometimes it's worth taking.
