I was talking with Long Zheng (founder of the I Started Something blog) and he pointed me at the Aero Taskforce website (ie about Vista). Interestingly enough he has recently launched the Aqua Taskforce website (ie about Mac OS X).
Funnily enough this community taskforce initiative is based around individuals who "Find, publish and rate user experience quirks in …….". Fantastic, sites dedicated to me having a whine about how product XYZ sucks or doesn’t work as it should. I think this concept is great and I hope that it does a better job that some of the corporate sites that try to collect user feedback, which they then disregard.