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7.8 References

Andrew Ellam, “Overture and Google: Internet Pay per Click (PPC) Advertising Auctions,” London Business School, March 2003, (accessed June 23, 2010).

“Financial Release,” press release, Google, January 31, 2008, (accessed April 3, 2008).

“Google Announces Plan for Two-Year Expiration, but…,” Google Watch, July 16, 2007, (accessed April 3, 2008).

“Google Search’s Golden Triangle,” Eyetools, (accessed April 3, 2008).

“Search Engine Results Chart,” Search Engine Watch, March 23, 2007, (accessed June 18, 2010).

Danny Sullivan, “Searches per Day,” Search Engine Watch, April 20, 2006, (accessed June 18, 2010).

“Traffic History Graph for,” Alexa, April 3, 2008, (accessed April 3, 2008).