by Dmitry ZAKS Agence France-Presse Istanbul, Turkey (AFP) — Twitter was blocked for at least 12 hours on major Turkish mobile providers in an outage that ended early Thursday, following a flurry of online criticism of the government’s response to this week’s deadly earthquake. By about 5 am (0200 GMT), the social media site was accessible again. Online monitor netblocks.org on Wednesday showed Twitter becoming throttled and then completely blocked across all major cell phone […]