In the news

Similar thing happened to Lavabit, an encrypted mail service that was said to be Edward Snowden's webmail of choice. Ladar Levison put ten years of his life into building his business until one day he got a knock on the door from the NSA... It seems he was ordered to betray his users or shut up shop. He chose the latter. I'd love to know the full story but the NSA has used anti-terror laws to gag Levison and deny him his constitutional right to free speech.

My understanding is that it's likely that the order was to hand over user details, etc, and not shut it or mention it. It seems he could still be in shit for shutting it...