I’m listening to Jason Calacanis’ interview of Ev Williams, one of the co-founders of Twitter. If you haven’t heard of Twitter, it’s the latest big darling of the Web 2.0 intelligentsia.

Ev talks very frankly about how Twitter is making money (bottom line: it’s not), when will Twitter add images and video, and perhaps a few clues as to how they plan to stay in business while burning money hand over foot (Think a professional subscription), what happened to Oleo and more.

While Jason is not everyone’s cup of tea, he asks good questions of Ev re Twitter, Oleo (a podcasting business Ev bought back from the VCs/angel investors when it didn’t take off) and blogger which was sold to Google.