Code Known as Flash Cookies Raises Privacy Concerns

Now that browsers ship with "anonymous mode" I imagine the fact that you're not anonymous at all on any page that has flash is completely confusing to the average internet user.

On *nix systems including Mac you could do what I do: a cron job that runs every week to delete everything in the ~/.macromedia/Flash directory. Windows users can achieve the same thing with an event schedule, the directory is probably in something like %USER%\App Data\.