Wikipedia is not exactly *down*, it's just overlaid with the SOPA message.

If you already know about SOPA/PIPA and need access to wikipedia for the next 24 hours, do the following:

step 1) install the latest version of firefox if you are not already using it.

step 2) install greasemonkey: https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/

step 3) install this userscript: https://userscripts.org/scripts/show/123455

As it is generally not a good idea to run greasemonkey scripts without knowing what the javascript contains, you can view the full source at https://userscripts.org/scripts/review/123455