Rated 5 out of 5 stars

Feature NoScripts lacks. very nice :)

Would it be possible to bind granted flash to the active tab only? So that if you switch to another tab, the plugin to be turned off again automatically, and the browser to always start without Flash; or to whitelist certain sites?

This review is for a previous version of the add-on ( 

Thank you!
The possibility to allow plugins only for certain sites is already build into firefox, at least concerning the use of plugins at all. Just set the value of "plugins.click_to_play" in about:config to true, and you can specify for every site if it is allowed to use plugins. (either temporarily or permanently)