voilà déjà au moins 2 sites participant:
http://xbmc.org/
http://www.emuparadise.me/
http://www.xda-developers.com/
http://torrentfreak.com/
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article:
https://www.eff.org/deeplinks/2012/01/january-18-internet-wide-protests-against-blacklist-legislation
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SOPA:
http://www.gpo.gov/fdsys/pkg/BILLS-112hr3261ih/pdf/BILLS-112hr3261ih.pdf
PIPA:
http://www.gpo.gov/fdsys/pkg/BILLS-112s968rs/pdf/BILLS-112s968rs.pdf