I should think by now everyone is familiar with tracking cookies. Anti-malware software makers love to make a big deal of "harmful" cookies that they find on your system, although there really isn't much harm that they can cause.
Regardless, flash cookies are as much of a pest and can be more difficult to detect and control. However, a simple solution is to go to
Adobe Flash Manager Settings and get rid of them yourself. I keep the site bookmarked and I regularly delete all flash cookies.
If you are using Firefox, I recommend the BetterPrivacy add-on to help keep those "super" flash cookies at bay. I also installed the Flashblock add-on to gain further control.