A screenshot shows the Facebook page of Iran's Supreme Leader Ayatollah Ali Khamenei September 17, 2013. Iranians had a few hours access to Facebook and Twitter before a Web firewall went back up by ... more 
A screenshot shows the Facebook page of Iran's Supreme Leader Ayatollah Ali Khamenei September 17, 2013. Iranians had a few hours access to Facebook and Twitter before a Web firewall went back up by Tuesday and Tehran scotched talk of new Internet freedoms by blaming a technical glitch for the brief opening of access. REUTERS/Stringer (POLITICS SCIENCE TECHNOLOGY) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS less 
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Reuters | Photo By STRINGER / Reuters
Tue, Sep 17, 2013 10:28 AM EDT