Attorney Ben Sheffner, on his blog Copyrights & Campaigns, describes an interesting situation where a criminal defense attorney has threatened to file state bar ethics charges against a California attorney and blogger (Patrick Fey of Patterico's Pontifications) who, in the course of his blogging, contacted a witness in the Louisiana attorney's case. It doesn't sound like there's much of a basis for an ethics charge (See Sheffner's post and the Legal Ethics Forum), but it's an interesting case.
Legal information and research resources from The Ohio State University's Michael E. Moritz Law Library