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Firefox for Android now supports over 450 add-ons
(www.ghacks.net)
This is a most excellent place for technology news and articles.
But no Cookie AutoDelete among them. Firefox Nightly is still better
It is, but only if you go on the main website, and not the android sub category https://addons.mozilla.org/fr/firefox/addon/cookie-autodelete/
But then that is for desktop Firefox, not mobile. Right?
https://addons.mozilla.org/en-US/android/addon/cookie-autodelete/
It will allow you to add it to mobile firefox it seems, maybe it just didn't get categorized correctly?