http://www.engadget.com/2012/01/17/sopa-markup-resume-february/
I mean people who aren't involved and just want to use the web site. Yeah, it's their site so they are free to do what they want with it, but I'm not entirely clear on the purpose of this.
Wikipedia and sister sites get hits from all groups of people, many of which probably haven't heard an inking about SOPA yet (Given that the owners of most of the news sources in the US are very pro-SOPA, I doubt they are doing much negative coverage, or coverage at all, of SOPA, making it invisible for a good many people)