I'd like to announce FREE beta of a new service for Kindle(Kindle Weather Station
). You can turn your kindle instantly into weather station replacement. Since it is Internet based service, everything runs in kindle's browser and no additional hacks or jailbrake is needed.
In order to use your kindle as weather station you'll need registration (otherwise the place is changing randomly) and optionally you can disable kindle's screensaver (mini-howto with pictures included in the FAQ).