A blog post from 2/7/14 on the Chicago Business litigation Lawyer blog was an interesting intersection of the legal and Social media worlds.
Libel Via Twitter Trial Ends With a Defense Win, Chicago Business Litigation Lawyer Blog
By Vincent DiTommaso
"In the world of defamation, there have long been two categories, which until recently, have covered all forms of defamation: slander, which includes any verbal defamation of a person or entity and; libel, which covers any defamatory comments made in writing. Now, with the growth of communicating over the internet, it appears that a new category of defamation is developing."
http://www.chicagobusinesslitigationlawyerblog.com/2014/02/in_the_world_of_defamation.html