Great! I hate Flash, but that's just me!

It is needed though, because so many sites use it...
I've recently learnt a nice trick to get rid of those intrusive Flash cookies that your browser won't delete automatically. I'm talking Linux and Firefox here. Not sure about "the other side/s".
Navigate into subdirectories under:
~/.macromedia/Macromedia/Flash Player/#SharedObjects/
~/.macromedia/Flash_Player/#SharedObjects/
~/.adobe/Flash_Player/
("~" means /home/you/, for those that don't know)
...and you'll find Flash cookies all over the place.
This is how I managed to get rid of them (and everything still works 100%).
Code:
rm -rf ~/.macromedia
ln -s /dev/null ~/.macromedia
rm -rf ~/.adobe/Flash_Player/
ln -s /dev/null ~/.adobe/Flash_Player/
All of those cookies will, in future, get sent to /dev/null

Nice!
DISCLAIMER: If you don't know what I'm talking about.... DON'T try this at home.