The praise for Michael Phelps' record-breaking swim continues to pop up on Twitter feeds, most recently from President Barack Obama himself:"Congrats to Michael Phelps for breaking the all-time Olympic medal record. You've made your country proud. -bo," said the tweet.Although he wasn't specifically tagged in the tweet, Phelps saw it and replied at the front of his retweet to Obama."Thank you Mr. President!! It's an honor representing the (hashtag)USA !! The best country in the world!!"Phelps also used Twitter to make sure his teammates on the 4x200 relay knew how much he appreciated their contributions to the swim - "for giving me the lead they did going into the last 200!!!!" - that gave Phelps his record 19th medal.