As of around 12:45 p.m. Eastern Time, Twitter has been down now for some time. You could hear the productivity of people increasing as a result. A Twitter spokesperson at the time had said they were looking into the issue and didn't give any word on when the service would return. By 1:10 p.m. they got their services back online and thus the productivity has gone back down around the world.
Pingdom stats revealed this was one of Twitter's worst crashes in months. The outage lasted around 59 minutes.
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