comScore announced today the release of a new cookie deletion study. The title of the press release nearly says it all, “Cookie-Based Counting Overstates Size of Web Site Audiences“. The results are interesting but are not very surprising. In fact, they appear to coincide nicely to the Jupiter Research study done in 2005.
Since the first reports of this issue started surfacing a couple years ago, I have done some personal research on methods for measuring both cookie deletion and cookie blocking. Rather than write a couple really long post I have put up a couple pages discussing using the browser’s cache and flash local shared objects. The later of the two was also published in Web Site Measurement Hacks, by Eric T. Peterson. You can find them under the Projects and Papers section of my site.
-Ian
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