By David Kravets

(Wired) — Twitter confirmed Tuesday evening that its microblogging site has been shuttered by Egyptian authorities. This came hours after widespread reports that access had been cut off, as Egyptians took to the streets in what many hope and some fear would be a sequel to the revolution in Tunisia last week.

The day’s speculation that the Mubarak administration might have pulled the plug on Twitter underscored the power of the site and other social networks as tools to both coordinate and disperse news of a citizen uprising. Twitter, Facebook and YouTube were widely used in Tunisia’s recent uprising and in Iran last year. …

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