If you disable 3rd party flash cookies, that should eliminate all unwanted tracking.
Meanwhile, flash cookies are useful for other things: Pandora uses them to keep you logged in forever, even if your session on the server dies (unless you log out), on our site we use it to store copious amounts of user data (such as music libraries) so that it doesn't need to be loaded from the server every time you visit.
Flash cookies are also a win over regular cookies because they aren't sent along to the server with every single http request.
Meanwhile, flash cookies are useful for other things: Pandora uses them to keep you logged in forever, even if your session on the server dies (unless you log out), on our site we use it to store copious amounts of user data (such as music libraries) so that it doesn't need to be loaded from the server every time you visit.
Flash cookies are also a win over regular cookies because they aren't sent along to the server with every single http request.