LONDON – Michael Phelps is the Olympic athlete mentioned in more tweets than any other Olympian here so far, Twitter said. Phelps though has been the Twitter star of the Games to-date. The biggest spike of the day on Tuesday in Olympics-related conversations on Twitter was also caused by Phelps in US prime time when he won a record-breaking 19th medal in the 4x200 meter freestyle relay, according to the company. “The past few days have been full of captivating, historic Olympics moments.“As records are shattered and dreams achieved, the world has turned to Twitter to come together in celebration.” – Agencies