Check out this article talking about the ABA's opinion on Judges use of social media outlets.
http://www.jdsupra.com/legalnews/aba-releases-opinion-on-judges-use-of-s-71472/?utm_source=jds&utm_medium=twitter&utm_campaign=legalalerts
http://www.jdsupra.com/legalnews/aba-releases-opinion-on-judges-use-of-s-71472/?utm_source=jds&utm_medium=twitter&utm_campaign=legalalerts