If somebody is interrested to graph flow and has experience making graphs, please contact me offline...
I only have rumors - there are supposedly 2 500,000 bitcoin stashes and the 'founder' has over a million. But I haven't been able to confirm that. I would say the exchange owners may have accumulated a tidy sum as well - but I would like to see the spread also - my understanding is that the block chain acts like a ledger of everything that has happened, and every transaction writes it record in a way that references all others - meaning its hard to fake, I believe if you had more than half the hashing power of the network you could enforce you version of the ledger, and with pools like deepbit having close to half this might be a problem, but generally its an ingenious idea.
My problem comes from an economic analysis going forward and I believe its too late for this service to be restructured, so it will have to rise again in another form. I think bitcoins will stay around in some form, to service a market, but this is internet beta from an economic modelling perspective.
Here's my prediction - the early adopters will cash out enough before the crash to have the capital to start bitcoins II.