Twitter - microblogging platform for short updates, often called "tweets" of up to 140 characters. Twitter FAQ

Legal Tweets - Legal discussions on Twitter moderated by Nicole Black.

LexTweet - lawyers and legal professionals on twitter list and community. From LexBlog.

Legal Aid & Non-Profit Legal Organizations on Twitter and Lawyers and Legal Professionals on Twitter. From JDSupra.

16 Ways Lawyers Can Use Twitter By Bob Ambrogi for Law Technology News

Tweetdeck desktop software for enhancing the Twitter experience.