Over the last six months, I've been experimenting with a representative sample of what I hoped would be the best bitcoin services online: CEX.IO and GHash.io, Bitstamp, CoinBase, Kraken, and Mt. Gox. During the course of my testing, one (Mt. Gox) went bust, the value of a bitcoin fluctuated between $400 and $1,100, and endless pundits declared it all over. But it's still here, and I believe the idea -- and possibly bitcoin itself -- will be a fundamental force for change in the meshed society the Internet is creating.