The great Tumblr blackout: 3 theories

The popular blogging site has been down for almost 24 hours. What's behind the ongoing outage?

Tumblr users take to Twitter to vent frustrations over the service outage.
(Image credit: Screen shot)

Tumblr, the popular "microblogging" service beloved by the technorati, has suffered a major service outage. No Tumblr site has been online since Sunday evening, an unusually lengthy outage for a major website, causing many of its fans to swamp Twitter and Facebook with despairing comments. The blogging service — which allows users to easily post and share photos, pictures, and links — works more like a social network than a traditional blog set-up. Tumblr's staff blamed the problem on a "major issue in one of its database clusters." What's going on?

Tumblr has been hacked: Some suspect this may be the work of hackers, says George Spangler at World News Headlines. "There were indications that several users of a forum site were engineering this attack," planning to overload Tumblr's network with "traffic it cannot use," a hack known as a DDoS, or "distributed denial of service." Some users of Tumblr were even "planning to preempt [the effort] with their own attack."

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