It's a craze that needs to end. The rapid release schedule works for Chrome because there's a lot of people working on it, and paid to do so too, typically very well. Hundreds of people work on it everyday, as a day job. (And even still some bugs do slip through!) Mozilla et. al. (including one Canonical for Ubuntu) don't really have this magnitude of people and effort working on it. They can't catch bugs as fast, not mentioning be productive as fast. It just doesn't work.
Another thing is that Chrome generally auto-updates silently, so there aren't any issues with major bugs getting left on users' computers as a result of the rapid release schedule, but yeah, rapid release does have its problems. I personally like it because I'm always checking for updates to everything, but I guess not many people are like that lolEDIT:
We seem to be off-topic