Maybe it's a cultural thing and btc did take off on your side of the pond; but from my point of view I can't see any people willing to put down real money in exchange for btc. Sure; we've all downloaded the client, had a bit of fun to see how many hashes our hardware could work through only to realize that in the end the only place where it would leave a mark was on the electricity bill. So from where I'm standing, the only people willing to put 'real value' to btc are either those who have a lot of it and really, really, really would like other people to buy them from them so they get 'real' money. Or those who think that it might be good idea to invest in them now (I'm guessing that if you spend 5m on btc and do it 'smart' that you probably could horde quite an amount of them) in the hope of selling it somewhere in the future for a hefty profit.
Both situations may have the effect of btc getting a perceived increase in value, but I for one expect said bubble to implode 'real soon now' and leave the unlucky behind with a string of worthless hardware and/or bits & bytes.
But that's just my opinion and by observation it does seem that there are quite a few people out there that are making quite a profit (in dollars) on the whole operation right now...
PS: I'm not really against the whole idea of decentralized crypto-currency PAYMENTS (although I do think that the current implementations are painfully slow and scale very badly -- having to download the entire log, really ??). The part I really dislike is the way they are 'mined'... I simply can't find any angle where converting electricity into money by means of specialized (expensive) hardware seems to be a good idea =( At least scrypt tried to work around that but alas the arms-race is on...
But no, I'm not actively taking part in 'the community' and hell what do I know...