While agreeing that social media is popular and fun, "Can't talk. #training" may be the most apt tweet or status update, especially at the games. And it's far less than 140 characters. "It's good to keep in contact with your family and friends," Australian shooter Alethea Sedgman said. "But sport-wise, it's better to focus without Facebook." The Australian cycling team doesn't use social media during competition time. No RTs for them, maybe just some RTTs (remember to train).