I mean, really, does the value of bitcoin really change just because <online exchanges> report that it changes? We should really just start pricing stuff in bitcoin and ignore what those exchanges say.
Correct, for example I would not trade you 1.44 btc for a ps3, not even .1 btc. Having some bitcoins to play around with is worth well over the mt gox rate to many people. To others I guess it would have less value. Which type is there more of? That is what the exchanges are for finding out.
Also it can never be stable at such low prices. If you want stability you want a group or person to say "I will buy all bitcoins that will ever be created for $1000 each". $21 billion would accomplish this.