Poor Pandora, and some Privacy Surprises

So I downloaded and installed (btw, shouldn't we already have a combined word for "downloaded and installed", like "dinstalled" or downstalled or something...) PandoraJam so for $15 or so, not only can I let my friend(s) see what I'm listening to at the moment (on my IM status), but also deprive Pandora of the last remaining vestige of hope of ad revenue.  Poor Pandora... 

When I installed PandoraJam, it instantly connected to Pandora, not asking me for my username and password.  This reminded me of something that I found out a while ago, but I think most people are not aware of: a Flash player keeps its own cookie-like local information (up to 100kb by default) where it can store things like credentials - or track your surfing habits.  When you clean up your "private" data like cache & cookies on Firefox or Safari, it does not clear that cache.  To do this, you'll need to go to the Flash Settings Manager page to clear the information separately from your browser's mechanisms.  For those people who religiously clear cookies (or set them to be cleared on browser exit), you might be surprised how much persistent data is there.  This data can (potentially) be used to track where you surf, by using flash-based ads on various sites.