The latest Instapaper update contains a pretty nifty new feature: the ability to update automatically in the background; the app uses geofencing to turn updates on and off.
The Instapaper blog describes how the app will download articles whenever you enter a pre-set location, such as your home or work. You can add up to 10 locations using this feature.
Developer Marco Arment gives credit to News.me, which was first released in April 2011
