There's also speculation that the spike in "Bitcoin Days Destroyed" (essentially sum of (transaction size * days since last spent)) today was MtGox bringing col

There's also speculation that the spike in "Bitcoin Days Destroyed" (essentially sum of (transaction size * days since last spent)) today was MtGox bringing cold wallet online: https://blockchain.info/charts/bitcoin-days-destroyed-min-year https://blockchain.info/charts/bitcoin-days-destroyed-min-ye...