Star Trek legend William Shatner has baffled fans by quitting and rejoining just hours later.

The veteran actor bid farewell to his followers on the social networking website on Wednesday (12Mar14), writing in his final post, "My dear friends, after much deliberation I've made the decision to leave Twitter. It's not an easy decision but it's the right one for me... I wish you all my very best. Bill."

However, Shatner reactivated his account just hours later in a move which left his 1.8 million followers confused.

After returning to the website, the star branded the move a "mistake", adding, "Made a bad midnight decision. Pressured by too many things on my plate. In a pique, I quit Twitter. Boy did I make a mistake."