The extension Cookie Monster (MPL v1.1) provides a more accessible and
sophisticated cookie control:
https://addons.mozilla.org/firefox/addon/cookie-monster/
"Cookie Monster provides proactive cookie management on a site or domain
level basis, including 3rd party cookies. Via the status bar, it provides
easy access to enhanced cookie functionality, while doing so in a
non-intrusive manner."
I disable all cookies by default and use Cookie Monster to control the ones I
accept; 99% percent of these are session cookies, eliminated when I close the
browser.
Additionally, NoScript allows automatic encryption of cookies (I think only
in HTTPS connections): NoScript Options > Advanced > HTTPS > Cookies.
