If you move away from GoDaddy you can also:

Return or reject products created or distributed by SOPA supporters. (worldwide)

Cancel, return or reject most sports related products and offers. (in america or american sports related)

Return, reject and cancel most music related products and offers. This also includes offers like online subscriptions to online music streaming services that have direct or indirect deals with SOPA listed (umbrealla) companies. Probably the majority of services. Not sure how Apple and Amazon are indirectly involved. (worldwide)

Don't forget about: Books/Magazines (Random House/Bertelsmann, Time Inc.), Pharmaceuticals (Viagra=Pfizer), Games (Activision Blizzard <- Vivendi -> Universal), MTV, VH1, HBO, Marvel, DC Comics, Nickelodeon, Hulu, Nestle, The Body Shop.

The list will be very long consididering all parents and subsidiaries that are involved.

tl;dr turn off the tv. don't pay or consume sport (events). don't pay for music/movies.