This post over at Reddit, is calling for Wikipedia, arguably a very high profile website, to transfer their domain name from GoDaddy to someone else who doesn’t support SOPA.
Another user, veritasen, has come up with (or at least the first to post it) about creating a donation website to give all donations to Wikipedia, if they move their domain over to another provider. I wholeheartedly endorse this.
Update 5: AAAAANNNDDDDD GoDaddy no longer officially supports SOPA.
Update 4: Wikipedia owner, Jimmy Wales, has just tweeted that he will indeed be moving his domain away from GoDaddy because of their stance on SOPA.
Update 3: GoDaddy has a big shoulder shrug in response to the boycott.
Update 2: Here are very specific steps you can take to transfer any domains you may have with GoDaddy to another company who does not support SOPA, which WITS pledges to do shortly.
Update 1: User neilk, who claims to be a Wikimedia Foundation software engineer has this to say,
Hi guys. Wikimedia Foundation software engineer here. Our staff is tiny, so this means I sit about in the same room as the people who can deal with this.
I’m not speaking for that team, but I’m going to suggest you all be patient.
We have a rule to never make big changes to the website on Friday unless it’s an emergency. This probably goes double for DNS changes, which as any techie will tell you, often go wrong. And this is the Christmas weekend, so already much of the tech staff is traveling or taking a vacation day. And I think they’re sincerely hoping they aren’t pulled away from friends and family due to the site being unavailable. This is a terrible time to make a big change. For a site as big as Wikipedia this takes considerable planning.
That said, I know that a number of Wikimedia Foundation people moved some personal domains from GoDaddy the other day, including myself. The Foundation has already publicly stated that  SOPA will hurt the free web and Wikipedia, and the English Wikipedia community is seriously considering a form of  sitewide blackout as protest, sometime in January.