Do these really need http at the beginning? They won't block https, right?
There's also the https://addons.mozilla.org/en-US/firefox/addon/blocksite/ blocksite extension, which I think is compatible with these, and will also gray out search results, though it will make them totally unclickable.
It appears that fairmormon.org has been added here my mistake. It's not a Wikimedia/Wikipedia mirror: it's the wiki for the en:Foundation for Apologetic Information & Research. -- 188.8.131.52 21:58, 10 February 2012 (UTC)