On the second Friday of the Egyptian revolution (4 February) I noticed a change in the dusty, makeshift bookstalls on the streets leading to Tahrir Square. The usual array of cheaply printed, sun-faded, sometimes used books – Programming for Dummies, C++, The Prophet’s Hadith, The Little Prince, Advanced Mathematics – were joined by An Alternative President, Red Card for the President, Revolution 2025 and a selection of pirated publications with covers bearing the silhouette of Che Guevara or social networking logos. ‘It was a revolution for our business,’ one of the booksellers told me recently. ‘There were no longer police on the streets – there was no one to arrest us or take away our goods. Censorship ceased to exist.’