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How do advertisers show me custom ads?

Author's Note

As advanced as the technology is, custom Internet advertising doesn't always get it right. Imagine that you're a man who shopped online to buy your wife a dress for her birthday. Now you're likely to get dress advertisements for a few weeks until the marketing companies realize that you aren't a reliable women's clothing customer. Just recently, while researching this article, I came across some poorly-targeted advertising. The ad was trying to sell me a Lexus ES, which retails for about $36,000. Sure, that's cheap for a Lexus, but let's just say my six-year-old American hatchback suits me much better.

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More Great Links


  • Baird, Eleanor Coumont. "Targeted Online Advertising: Persuasion in an Era of Massless Communication." Master's Thesis. June 2008. (Sept. 20, 2012)
  • Google Chrome. "Manage Cookies and Site Data." 2012. (Sept. 20, 2012)
  • Manjoo, Farhad. "The Uncanny Valley of Internet Advertising." Aug. 23, 2012. (Sept. 20, 2012)
  • Penenberg, Adam L. "Cookie Monsters." Nov. 7, 2005. (Sept. 20, 2012)
  • Purcell, Kristen. "Findings: Search and Email Remain the Top Online Activities." Pew Internet and American Life Project. Aug. 9, 2011. (Sept. 20, 2012)
  • Purcell, Kristen, Joanna Brenner, and Lee Rainie. "Targeted Advertising: 59% of Internet Users Have Noticed It, but Most Don't Like It." Pew Internet and American Life Project. March 9, 2012. (Sept. 20, 2012)
  • Tynan, Dan. "Are Custom Ads Getting Just a Bit Too Personal?" PCWorld. Oct. 31, 2010. (Sept. 20, 2012)
  • Vega, Tanzina. "Online Data Helping Campaigns Customize Ads." The New York Times. Feb. 20, 2012. (Sept. 20, 2012)
  • Whoriskey, Peter. "Every Click You Make." The Washington Post. April 4, 2008. (Sept. 20, 2012)
  • Yglesias, Matthew. "Me Want Cookies!" March 5, 2012. (Sept. 20, 2012)