It will be 10 years ago in April since the first video, Me at the Zoo, was uploaded onto YouTube. Over the last decade, the Google-owned platform has evolved into the King of all Video, commanding more audience share--and creator input--than any other platform on Earth. But with powerful companies like Facebook looking to establish a presence in the video business, staying on top going forward won't be easy. With YouTube celebrating this key birthday, FierceOnlineVideo's Samantha Bookman analyzes the competitive landscape here.