[weavejester]

"I can absolutely predict that if you can buy several hundred thousand dollars worth of bitcoins from person X, and then go to persons P, Q, R, ... Z and redeeem them back for cash, that the authorities will shut down that sort of thing quite quickly."

It's already been done:

http://i.imgur.com/PUMtG.jpg

That's 400k BTC (about $400k) being sent to a number of different accounts.

[kwis]

Good luck cashing that out without crashing the market. Somebody pointed out, just a few days ago, that a $10k sell-off recently scrubbed 25% off BCN/USD. A 400,000BCN sell-off would almost certainly drop it to pennies.

[weavejester]

I suspect that anyone confident enough in the Bitcoin economy to invest that amount of money is not looking to cash out quickly. They may be gambling that Bitcoin becomes a commonly-used internet currency, in which case they stand to gain a lot of money in the long term.

edit: Ah, I see your point. You said "redeem back to cash". Yes, that probably wouldn't work in an economy only worth a few million :)