This challenge to Internet censorship in ACLU v. Gonzales (originally ACLU v. Reno, then ACLU v. Ashcroft) began in October 2006. The law threatened draconian criminal sanctions, with penalties of up to $50,000 per day and up to six months imprisonment, for sites presenting online material acknowledged as valuable for adults but judged "harmful to minors." Clients included a broad coalition of writers, artists and health educators with a diverse Web presence.

Patricia Nell Warren, one of the ACLU's plaintiffs on the case, blogs about how enforcement of the COPA laws will personally affect her:

"If the law is found enforceable...My body of work, which I have spent 35 years creating and publishing, could disappear in the blink of an eye."

The ACLU has more on today's decision here.

Update: More on the decison here.