YouTube celebrates its seventh birthday May 21, 2012 by admin Tweet Today marks the seventh anniversary of YouTube opening its doors to the Internet and forever changing how we share our video moments, and view streaming media. Read more… Neowin Related Posts:Google celebrates its 25th birthday with a doodle…Microsoft Flight Simulator celebrates its third…Microsoft celebrates Windows Insider Program's 9th…Grounded celebrates its third birthday today with…YouTube is changing the way it serves ads on TV apps