No Cookies For You
Are you still using cookies to track how many visitors you have and how often those users return? If so, the numbers being used for determining the value of your ad space may be overstated, way overstated. An article in the NYTimes - "The Case of The Dissappearing Cookies" - cites a February Jupiter Research report which found that 41 percent of male Internet users and 25 percent of females manually deleted cookies at least once a week, adding that the figures would be higher if they had included people who used anti-spyware programs to delete cookies automatically.
In 2004, 18 percent of people who knew what cookies were said they deleted them very frequently, according to a study by Revenue Science, which helps advertisers find online audiences. A survey in December, 2005 reported a drop in that figure, to 8 percent.