Defamation on Twitter is one of the most common forms of defamation this firm is currently dealing with. Twitter defamation happens when the tweeter posts either an original tweet, posts over Twitter a link to other defamatory material, often a blog post, or when the tweeter retweets a tweet which was originally posted by a third party and which they had or had not been aware was defamatory.

Although some of the most popular examples of Twitter defamation are those involving celebrities, business people and even companies can become the subject of defamatory posts on Twitter more often than most people think.

In 2013, this firm brought a defamation case at the High Court in relation to defamatory allegations which were made by a shareholder against a PLC. The shareholder, Gary Carp posted allegations against the Chairman of Red Rock Resources on shareholders' discussion forums and then used Twitter to send shareholders links to his original allegations. He also made fresh allegations in separate tweets.

Despite only having numerous Twitter followers, most of the claim against Mr Carp centred on his defamatory activity on Twitter. Since the Red Rock Resources case, there had been dozens of other cases involving defamation on Twitter.

Nearly all of the cases ended with a successful outcome the Claimant, occasionally due to a misguided belief by the tweeter that either their activity was not defamatory or that they will never get caught, having used a pseudonym or a false identity.