OpenLoopz: Getting Things Done on Android
sites.google.com
sites.google.com
On a broader note, I think you're targeting the wrong market. You're pitching it at the GTD market, people who understand phrases like "Open loops", but most lifehackers already have a a favourite GTD tool.
I think you'd be much better off trying to target your app at the mainstream, doing so would give you a huge upside potential which you would never see in the GTD market.