Twitter’s down for many users (Update: It’s back)

Update (9:30PM CET): The service is now returning to normal. Our original report follows. Twitter has gone down today for many users, who are reporting issues logging into the service’s website. The Downdetector website said it’s been receiving reports of problems since 11:49AM EDT. Users have reported seeing error messages suggesting that they refresh the page, but the recommendation seems to have had little effect. The issues logged by Downdetector appear pretty evenly split betwe