MIT students are developing some really interesting mobile apps, on various platforms. I especially like Mobile Trader (no link?) – there’s much potential for enabling microeconomies using its “craigslist/1.5 mile diet” mashup for Symbian. However, CashTrack seems designed for cheap people, though. C’mon? Do we really need to track who owes whom what based on serial unevenly-paid dinners? Maybe if you’re Kenny Bania – where the question of whether the soup counts matters – this logic makes sense. Also at odds with the Android (for which it’s written) ethos?