Here's an opinion from Joshua Kopstein at MotherBoard, concerning the Stop Online Piracy Act.
.. Since its introduction, SOPA and its Senate twin PROTECT-IP have been staunchly condemned by countless engineers, technologists and lawyers intimately familiar with the inner functioning of the internet. Completely beside the fact that these bills as they currently stand would stifle free speech and potentially cripple legitimate businesses by giving corporations extrajudicial censorial powers, they have found an even more insidious threat: The method of DNS filtering proposed to block supposed infringing sites opens up enormous security holes that threaten the stability of the internet itself.
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