Decius wrote:

More than half of the internet’s top websites use a little known capability of Adobe’s Flash plugin to track users and store information about them, but only four of them mention the so-called Flash Cookies in their privacy policies, UC Berkeley researchers reported Monday.

Awesome! Thanks Adobe!

I remember someone asking me why when they cleared their cookies their bank still didn't ask for "extended authentication" questions.

"Did you clear your Flash cache?"

"My what?"

What concerned me more was that the bank actually used some nugget of client side data as a security feature.

RE: You Deleted Your Cookies? Think Again | Epicenter | Wired.com