For the most part, I think grassroots movements to show unity against a particular issue on Capitol Hill as expressed through the likes of the web, twitter, facebook, etc are fairly pointless. Sure, changing your avatar may create unity among like-minded friends or, potentially, spread the word to others about a particular issue but it doesn't have any actual impact on changing whatever it is the person may be trying to expose. So, with that in mind, I am a little hesitant to embrace this Stop SOPA Javascript that displays a pop-over on any site it is added to for the duration of January 18th (this Wednesday). SOPA is a quite important but Tweeting about it isn't going to do much - but contacting your representative may.

Long story short, awareness of SOPA is trying to reach the next level via this script. Consider implementation on your own.