Willful participation in a DDoS doesn't sound like a good idea (being a criminal offense in Poland) just as much as the whole concept of getting the government to change their mind by taking down their websites (especially those belonging to parties not involved in the ACTA ratification process). One thing that folks behind this seem to have failed to learn from the SOPA battle is to make it impossible for the government to present the protesters as the bad guys in this situation in the mass media.