The Net Delusion: The Dark Side of Internet Freedom. By Evgeny Morozov. PublicAffairs; 408 pages; $27.95. Published in Britain by Allen Lane as “The Net Delusion: How Not to Liberate the World”; £14.99. Buy from Amazon.com, Amazon.co.uk WHEN thousands of young Iranians took to the streets in June 2009 to protest against the apparent rigging of the presidential election, much of the coverage in the