Joost goes live (with Ad model updates)

Joost is live: as seen on Digg. Beta testers have unlimited peer invites.

More on the ad model from Adverblog:

"One of the Leiden crew's top priorities is a backend ad engine that can pinpoint viewers by location, time of day, viewing habits, and opt-in profile information to serve up a perfect ad. Developed by open source geeks in privacy-centric Europe, the central database doesn't store any identifying data. Personal information is stored only on the user's own PC. Clark, the ad sales chief, is happy to blue-sky the possibilities: "Buy all the Desperate Housewives viewers in a zip code. Or the first thing a given viewer watches on a given day."

In theory, that kind of control will make the network much more valuable to advertisers. "We offer targeting they've never dreamed about in the TV world," says Werdelin. "And a deeper relationship with customers. Not just deeper than TV, but deeper than most of what you get on the Net. I don't think anyone really knows what those things are worth."