When I installed this plugin, I couldn't find it in my list of plugins. I was looking under 'S', but the plugin calls itself "Down Against SOPA", so it was actually under 'D'. Also, since the plugin is called "SOPA Blackout Plugin" on the WordPress site, I thought I had been tricked into downloading the wrong plugin. Once I got that resolved, I tried finding the settings for it. For some reason they're under the Settings tab with the name 'SOPA Options'.
PLEASE, not just you but EVERYONE WHO CREATES PLUGINS, come up with ONE NAME for it and stick to it. Giving it three different names and assuming users will be able to follow along is ridiculous.