Twitter's potential affect on who wins the World Series this year appears to now be a moot point, but the micro-blogging site had its shot today. Major League Baseball let fans vote with tweets in order to determine the final two players in the All Star Game, an eight-decade-old midsummer event pitting the National League vs. American League that will be held in Kansas City on Tuesday. The winning league gains home field advantage for the seven-game World Series in October. Between Noon and 4 p.m. ET today, MLB allowed fans on Twitter to help decide who plays vs. who doesn’t among n...