"It started not with a Facebook group or Twitter hashtag but a paper form. The day before what may have been the largest protest in history (and undoubtedly the biggest in Egypt) Mahmoud Badr, spokesman for Tamarod—“Rebel” in Arabic—announced that they had collected 22,134,465 documented signatures on petition sheets calling for President Morsi’s removal and new presidential elections. Although impossible to verify, the numbers Tamarod mobilized on the streets—one military source estimated 14 million Egyptians protested on June 30—told their own story."

http://www.technologyreview.com/view/516836/rebelbook-a-mix-of-technologies-let-dedicated-citizens-change-egypt/