Mozilla Labs is introducing a new project called Test Pilot, which is a opt-in program, with a goal to provide Mozilla developers with information they can use to test ideas and further build Firefox, Thunderbird and other Mozilla-based software. Initially Test Pilot will be available as a Firefox add-on which will collect anonymous user data. One nifty thing about Test Pilot is that it won't actually be gathering data all the time, just when a Mozilla researcher has a specific question that needs answering, like how many browser tabs the typical user has open at any given time.