The big question everyone has with Twitter is, and the very first one that John Battelle asked Twitter CEO Ev Williams when he interviewed him yesterday, is “What’s the revenue model?” And the answer Ev gave is exactly the same one they’ve been giving...

A few months ago we held an event called Testcase at Betahouse in Cambridge, MA where we asked four startups to come and user test their web sites with local folks who showed up. Despite the super informal user testing method we used, we clearly saw...