In July 2009, Horizon Realty Group, a Chicago real estate management company, sued a former tenant, Amanda Bonnen, for libel based on a Twitter message she sent to friends.
In October 2010, PhoneDog unsuccessfully sued employee Noah Kravitz in PhoneDog v. Kravitz for misusing trade secrets after he quit his job and began using his PhoneDog Twitter account to post Tweets for a competitor [REF].