I also think that aspect is interesting, but I wonder if it will really reveal as much interesting information as one hopes. If everyone used a single wallet (o

I also think that aspect is interesting, but I wonder if it will really reveal as much interesting information as one hopes. If everyone used a single wallet (or small number of wallets) and made only "real" transactions, it'd be a transparent (if pseudonymous) data set about how money is flowing around in the Bitcoin universe. And that would actually give hard data for understanding an economy, of the sort that one has to estimate very imperfectly in other currencies. But it's pretty easy to purposely foul the data if you want, especially given the ease-of-use of mixers. I would guess if Bitcoin usage gets more important, obfuscating schemes will only get more sophisticated and widespread.