Reliable network interaction on mobile is enormously difficult if you are trying to deploy code globally: each MNO mangles your packets in its own special way. Good to see tools like this, wish there were more, but the other half of the picture is empirical data on how particular pathological networks behave (I don't mean "EDGE", I mean "EDGE in poor coverage on MTN in Afghanistan"). Haven't found any real information, even in general terms, along these lines. Pointers welcome.

This area would be a great place for someone like Internet.org to add value, and they've announced some related work, but nothing seems real yet.