I had to restrain myself on the thread a bit. That one I add because he talked about doing it to get experience on his resume, what better experience then one of the top app for Magic in the Android market. (Then he went on to say he's looking into adding paid features.)
Really I like the feature, and have though about added something like it. Start an "event", mark down what deck you are playing and other information; location, format, competitive level, etc, start a match, start/end games, end a match which allows you to put in a match report. End an event with an option to export event report to email/etc. It just didn't make a ton of sense without full decklist.