British swimming star Rebecca Adlington has recently stopped using Twitter after the level of personal abuse she encountered on it .
It is feared that , in London , the burgeoning phenomenon of social media has huge potential to directly affect athletes ' concentration and confidence levels .
British swimming star Rebecca Adlington has recently stopped using Twitter after the level of personal abuse she encountered on it and it is feared that , in London , the burgeoning phenomenon of social media has huge potential to directly affect athletes ' concentration and confidence levels .