One telling sign of the widespread concern about SOPA/PIPA was that the non-profit Mozilla Foundation, which oversees the open source Firefox and Thunderbird projects, abandoned its non-interventionist policy, and came out strongly against the bills. It first signed a joint letter sent to the key sponsors of both bills, and then modified its home page, pointing to further information about SOPA. That, in its turn, linked to a post entitled "PIPA/SOPA and Why You Should Care", written by Mitchell Baker, the Chair of the Mozilla Foundation.

Baker has now written another, entitled "ACTA is a Bad Way To Develop Internet Policy", which explicitly links ACTA and SOPA/PIPA:

One aspect of the controversy about ACTA is the closed process where only a tiny subset of people affected by the law were allowed to participate. Another great controversy is about the actual content of ACTA. We know that the goal of stopping unauthorized access to digital content can lead to very dangerous results. The proposed SOPA and PIPA legislation in the U.S made this abundantly clear. This is an area where even good intentions can lead to imbalanced and dangerous results.

The post is fairly restrained, and basically recommends that people should find out more about ACTA and "make their voice heard." But it's a further indication that people from all sectors are waking up to the problems with ACTA, just as they did with SOPA/PIPA.