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According to Starcount's Emma Wallace, "Starcount ranks the social media popularity of the most famous people from the top 11 global social networks," which she says provides "a well-rounded, unique global social perspective." She says the company is charting 9,000 Olympians this year.
We particularly like the way you can discover overall popularity and trending of athletes, or you can narrow it down to a country's Olympic team, or even a specific sport. If you want to spread this information around, the charts are embeddable, like so: