Le Marketing Tribal Et Communautaire

have several hundred million users – Microsoft (256 million), Yahoo (254 million), Google (91 million) and AOL (48 million). For an overview on e-mail statistics see: Brownlow, e-mail and web statistics, April 2008, available at: http://www.email-marketing-reports.com/metrics/email-statistics.htm. 15 http://www.wikipedia.org 16 Regarding the use of free-of-charge services in criminal activities see for example: Symantec Press Release, Symantec Reports Malicious Web Attacks Are on the Rise, 13.05