Edelman Chomps On Cookies At Vinny's Expense
Cookie deletion is something advertisers ask us about from time to time, and there's not much in the way of impartial data out there on the topic. Below is a study by Ben Edelman on the subject of cookie deletion by anti-spyware programs, which was sponsored by Vinny Lingham's Click2Customers, a 50-person search affiliate arbitrage firm out of Cape Town. Hopefully it helps advertisers for whom this is an issue.
http://www.vinnylingham.com/2006/09/special-report-released-cookies-detected-by-anti-spyware-programs.html (study summary by Vinnie Lingham)
http://www.clickz.com/showPage.html?page=3623415 (ClickZ review of study)
http://www.vinnylingham.com/specialreports/cookiedetections/calc.html (cookie deletion revenue effects calculator)