From Kate Kaye at ClickZ
Cookie deletion has long been a bête noire of the online ad industry. A soon-to-be released report from independent spyware researcher Ben Edelman, however, highlights the degree to which spyware detection software employed by users may be contributing to the cookie crushing phenomenon. Perhaps his most intriguing finding: Yahoo's pay-per-click ad conversion tracking cookies were ensnared by six spyware programs, while none of Google's conversion cookies were caught.
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