Hi fellow GTDers!
I'd like to invite you to a web app I have been developing with my friends as beta users.
If you are interested, please sign up and try it out at the following url.
It's not actually a dedicated GTD software, but a life database system (kind of like Evernote) which has broader way of usage.
You might find this article helpful for implementing GTD on it.
Some of Tagaabo's features are,
-Harness power of tags to the full extent.
-GTD compatible in refreshing new way.
Let me know what you think of it.