Of course, a lot of the content that young consumers are consuming is on YouTube, which 83% of 13-17-year-olds told us they have accounts on when surveyed for our social media tracker in September. The popularity of the video sharing site is unrivaled, but Facebook might want to change that. One analyst is confident that the social network “is readying a YouTube-like rival” that will organize both user-created and professional content. Video advertising dollars are a likely reason for the move, if it is true. (MediaPost)