As a great fan of Twitter in terms of its concept and its technical implementation, when I was in the midst of rolling-out Version 3 of the iNavCalc mobile app, I got to thinking that it would be a fun mini-project to combine the Twitter API with iNavCalc. So that's what I've done.
The result is simple set of hashtags (#met, #notams, #route) which you can use to generate MET, NOTAMS, and routes directly from your tweets. All you need is a Twitter account. To get started, see the simple instructions here.