This month he takes on the Government's internet spying...
Last month, Levison reportedly received an order -- probably a National Security Letter -- to allow the NSA to eavesdrop on everyone's e-mail accounts on Lavabit. Rather than "become complicit in crimes against the American people," he turned the service off. Note that we don't know for sure that he received a NSL -- that's the order authorized by the Patriot Act that doesn't require a judge's signature and prohibits the recipient from talking about it -- or what it covered, but Levison has said that he had complied with requests for individual e-mail access in the past, but this was very different.
So far, we just have an extreme moral act in the face of government pressure. It's what happened next that is the most chilling. The government threatened him with arrest, arguing that shutting down this e-mail service was a violation of the order.
The entire blog, with several articles in the same vein, can be found here