Intro: As Richard Harper principal researcher at Microsoft Research points out, we are well and truly in the age of ‘communication overload’. He cites the familiar figure of 500 million active Facebook users, 175 million tweeters, five billion mobile phone connections (Harper, 2010). The age of Web 2.0 means we are living in an era where most people can access, exchange and publish what ever information they want digitally, sending it to one or thousands of people, in voice, text, images and video.