Press release, Worldwide Email Usage 2007–2011 Forecast: Resurgence of Spam Takes Its Toll, March 2007: “This IDC study examines how email is being used and will be used for business and personal purposes. In its eighth year, this annual study of email usage provides email solution providers and their customers with insights on how email usage is changing based on a 10+ year perspective (2000–2010)…”Spam volumes will continue to grow faster than expected due to the success of image-based spam in bypassing antispam filters and of email sender identity spoofing in getting higher response rates. Instant messaging, joined by free and low-cost VoIP calling, will result in slower email growth, especially among teens and young adults,” said Mark Levitt, program VP, Collaborative Computing and the Enterprise Workplace, IDC.”