I think I get it a bit more now, thanks.

As for the whole thing crashing : there's a massive amount of manipulation going on now, surely. The only way it can work is if people ignore all this madness and keep in mind that with more people using it things should get more stable. I mean the banking system for a start : if they want to try to mess up this whole thing, they just use their fiat money that's endlessly printed for them, buy loads of bitcoins, then try to flood and crash the market, right? Or just keep things going up and down all the time so they can work with the media to say that bitcoin is too volatile to be taken seriously.

I think MtGox are the least of our problems when looking at the bigger picture. Banksters are obsessed with controlling the money supply and this is a massive threat to them, (it's on the verge of going mainstream and is possibly the biggest threat to their money making they've faced since ancient times.) and I think they're causing a lot of this. It's annoying because it has so much potential, but needs more people using it to become more stable.