The risk of contracting foot-in-mouth disease seems just too high for many. 'Cynicism' But Robert Glaesener, boss of Twitter analytics firm Talkwalker, believes the fact that most of them are aged 50-to-60 has more to do with it - they're simply too old to understand social media fully, he says. Even tweeting extrovert Sir Richard Branson, who has more than six million followers and epitomises the consumer-friendly, approachable [...]