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1.5 References

Dave Crocker, “Email History,” (accessed March 18, 2008).

Richard Gay, Alan Charlesworth, and Rita Esen, Online Marketing: A Customer-Led Approach (Oxford, England: Oxford University Press), 8–9.

Peter Merholz, “Play with Your Words,”, May 17, 2002, (accessed May 27, 2008).

Rachel Rosmarin, “Open Facebook,” Forbes, September 11, 2006, (accessed June 22, 2008).

David Sifry, “State of the Blogosphere, April 2006, Part 1: On Blogosphere Growth,” Sifry’s Alerts, April 17, 2006, (accessed May 27, 2008).

William Stewart, “Living Internet,” (accessed June 21, 2008).

Danny Sullivan, “Who Invented the Term ‘Search Engine Optimization’?” Search Engine Watch, June 14, 2004, (accessed June 6, 2008).