It’s easy to determine how many users actively engage with each major social network. The companies reveal that information at every earnings call. When it comes to divulging the demographics of their user bases, however, companies such as Facebook and Twitter remain tight-lipped.
But now we know the most racially diverse social network in the U.S.: congratulations, Instagram. The data was revealed in a Wall Street Journal story about Twitter touting its diversity to lure advertisers.
Read More: http://mashable.com/2014/01/23/racial-breakdown-social-networks/