I use Weatherbug because it has access to weather sites that weather.com doesn't. A local news channel here has over 100 weather stations at local schools and such that I can to from Weatherbug. So I can check the weather from a station 1 mile from my house, not down in the valley that the airport sits in and always reads 10F lower than the rest of Austin. Checking the wind direction and speed is nice when headedo ut fishing in the AM. I wish other task tray tools could access these sites...