I have BitCoins, so this only is of benefit to me; but I have the feeling that stories about BitCoins are being promoted on HN, not only for the community's interest in BitCoin, but in an effort to pump the exposure to increase awareness and value of their stock.
I don't mind the effect too much, as I personally find the Bitcoin phenomenon to be endlessly interesting, but I feel compelled to point out what might be a small elephant in this room.