There is an interesting article in the National Law Journal about judges citing to blogs. The article notes that since 2004, judges have cited blogs 32 times in 27 different cases, including Justice John Paul Stevens’ dissent in U.S. v. Booker, 543 U.S. 220 (2005).
From the article:
“I’m not sure I have any cosmic theories about why it’s happening,” [9th U.S. Circuit Court of Appeals Judge Diarmuid] O’Scannlain said in an interview from his Portland, Ore., chambers.
“I am sure most judges, when they see carefully articulated logic in whatever form, in a law review or published lecture or electronic form, are inclined to evaluate it and if relevant cite it,” he said. He predicted that the practice would continue to grow.