I'm guessing some people at the bitcoin conference decided to invest a little money. They triggered EUR transfers to mtgox on monday and now the money is available to spend on BTC. That's why we cracked 3. Makes sense?
I think that's an excellent guess. Just like the US conference this will end up being temporary and the march downward will resume once the dust settles in the next few days.
Well, you've got to admit this is all better news than this summer with Senators calling for the outlawing of bitcoin, the Mt. Gox crash hack & shutdown, and mybitcoin's disappearance.
Personally, I don't care if bitcoin becomes the default world currency or not, which seems highly unlikely. A small bit part in the world economy is good enough for me. One day, I want to see a sign like this:
"We accept Cash, check, credit card (VISA, MC, Discover, American Express), Travelers Cheque, PayPal, Dwolla, and Bitcoin"
Speaking of which, I'm guessing mtgox will rebrand itself with a better name that could be included in the above list, and won't make users laugh when they learn what it stands for. Hmm... perhaps that's tomorrow's announcement?