I just wanted to point out that Monetas / Open-Transactions is working on a solution that eliminates the need to trust third parties.
What? With Bitcoin, you already don't need to trust a third party. Why would this be different?
Sure you do. You need to trust MtGox and Bitstamp when you want to do market trading. And as this thread shows, you will soon need to do off-chain just for normal transactions (as a result of the 1mb limit.)
Well, you eventually need to trust someone. Also, off chain? I will not stop using Bitcoin because of the block changes.