Overall: Make it trivially easy and quick to use place information!

Target Compass Make places understandable as quickly as possible without a network connection Make it easy (one step) to mark where you are as a place of interest. Give a simple picture of where a place of interest is, relative to the current location. Place Book Keep track of places of interest for a variety of purposes (sent them, received them, targeted them, etc) Make it easy to reuse those places for new purposes.

http://code.google.com/p/ncompass/