As far as I understand the OPEN act will only effect websites that promote copyright and there has to be a court process involving a website prior to any action and does not involve any take down but rather a cease and desist order (much like the one MPGH recieved from Nexon a couple years ago). It basically removes incentive for piracy promotion but doesn't harm the internets. I'm much more like to support this, but I'm only going of what I've read on one article.
If the OPEN act garners enough attention here I'll sticky this and close the SOPA thread.