For the RSS question, Its worth noting that the built in RSS reader works fine with an intermittent connection (although I do occasionally get crashes when interacting with it while refreshing...) . The default behavior is to refresh whenever it connects to a WLAN network, or every 30min while connected. I often read my feeds while waiting somewhere where there isn't a (free) network available, and just save (convenient little checkbox next to the post) the ones that I want to look into further for when there is a connection. I have very promiscuous network settings, and often find it's updated feeds and checked mail and the like on a random open AP while walking around.
As for getting information from the GPS, I've never tried exporting if that's the requirement, but Maemo Mapper does report speed, heading, etc., and has some system for importing POI in what looks like a reasonably standard way (haven't tried that feature yet)