I am currently a user of the Flashblock plugin. I would prefer to uninstall the Flashblock plug and block plugins by setting plugins.click_to_play to true. The reason I cannot do that is that whenever I visit a page like pandora.com/ or soundcloud.com/ that has a non-visible plugin-requesting element (terminology?), a doorhanger notification panel appears, which distracts me from what I came to the web page to do. I realize that I can opt out of future appearances of the doorhanger by interacting with the doorhanger, but that opt-out is per-site, and there are too many sites with non-visible plugin-requesting elements for that to be a satisfactory solution or workaround. So, my question is, Is there a way for me to configure my Firefox so that plugins.click_to_play is true, but the doorhanger never appears unless I explicitly ask for it to appear (by clicking on the colorful little "lego" element immediately to the left of the URL in the location bar)? Thank you for your attention.