Twitter is a social networking service that has experienced enormous growth over the last two years. In response, a number of law libraries and law schools have created Twitter accounts, including Santa Clara Law. Here is a list of prominent law schools and law libraries that have a presence in Twitter.

Case Western Reserve University School of Law - http://twitter.com/case_law
Duke Law Publications - http://twitter.com/DukeLawPub
Hamline Law School - http://twitter.com/hamlinelaw
Harvard Law School - http://twitter.com/harvard_law
Marquette University Law School - http://twitter.com/mulaw
New York University Law School - http://twitter.com/nyulaw
Oklahoma City University School of Law - http://twitter.com/OCULAW
Pace Law Library - http://twitter.com/pacelawlibrary
Pace Law School - http://twitter.com/pacelawschool
Pierce Law School - http://twitter.com/piercelaw
University at Buffalo Law Library - http://twitter.com/UBLawLib
University at Buffalo Law School - http://twitter.com/UBLaw
University of Chicago - http://twitter.com/uchicagolaw
University of Iowa College of Law Director of External Relations - http://twitter.com/jilledy
University of Iowa College of Law News - http://twitter.com/tsnee
University of North Carolina Chapel Hill School of Law - http://twitter.com/unc_law
University of San Diego School of Law - http://twitter.com/USanDiegoLaw
University of Toronto Faculty of Law - http://twitter.com/UTLaw
University of Utah S.J. Quinney College of Law - http://twitter.com/sjquinney
Valparaiso University School of Law - http://twitter.com/ValparaisoLaw
Washburn Law School - http://twitter.com/washburnlaw
Yale Law Library - http://twitter.com/yalelawlibrary

h/t to Law Librarian Blog and Social Media Law Student