Firefox plugin approvals... how to disable?

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http://www.linuxquestions.org – Firefox (I'm running FF 21.0) seems to give you two options for dealing with plugins: 1.) allow all plugins to be loaded without question or 2.) allow them to load after you approve each request. Is there a way to disable plugin loading altogether and avoid even being asked whether plugins should be loaded? If you visit a site with multiple videos you seem to get prompted to approve loading a plugin for each and every video that the web page wants to display. If I really have to go through an approval, it'd be nice to only have to click once instead needing to respond to N dialog pop-ups. (HowTos)