Zeynep Tufekci suggests that Turkey's motives in blocking Twitter--where news of government corruption spread--are more strategic than most analysts believe.
The unending leaks of alleged wiretaps implicating the prime minister and his inner circle in a massive corruption scandal are certainly the target of the Twitter block, but not in the way most think. ... They are playing a different game. And to actually understand what’s going on, the story needs to be analyzed where it lives: the specifics of Turkish politics, the timeline of the block, and what Erdogan (and his inner circle) is saying to his throngs of cheering supporters.
The tl;dr: it's a kind of ostentatious public restraining order, issued to paint social media in a certain light: as a dangerous infection that does not respond to commands issued in Turkish.