This doesnt surprise me lol...
but big deal, its a cookie that tells some sites what sites you've been on. Unless the site its telling is your boss, and youve been on pr0n or something, I don't see what the big deal is...sure invasion of privacy (if you wanna call it that), but you've likely agreed to this happening through a terms and conditions / EULA when you installed flash...
edit: i just went through the list, they are just sites ive been to..mousebreaker, youtube, etc...and the biggest usage is 50kb thats for like 1 or 2 things.
AND the max allowed is 100KB by default, if it exceeds this size it'l give you a warning...like i said, only 50kb for a few sites, it'd be no more than 5mb of data overall (probably a lot less)