Cory Doctorow is switching to Ubuntu! How many tech luminaries can Ubuntu rack up in the span of a few weeks? [Tim Bray](http://www.tbray.org/ongoing/When/200x/2006/06/15/Switch-From-Mac) is switching, too. Next Walt Mossberg will post a [glowing review](http://ptech.wsj.com/archive/ptech-20050428.html) and [Scoble](http://scobleizer.wordpress.com/) will replace his Vista Beta install with [Dapper](https://wiki.ubuntu.com/DapperDrake).