Almost three-fourths of adults who get online get on Facebook, and that does not count Twitter, Linkedin, Snapchat, Periscope and all kinds of other social media outlets your kids know about that we don't.
There is a new one now called "Sidewire." It picks a select group of contributors with particular insight into politics where you can read their thoughts without having to scroll through things like what grandma had for lunch on Facebook.
This comes at an interesting time when it seems many people are interested in politics but are also annoyed with it.
Tucker Bounds, Sidewire co-founder and former Facebook director of corporate communications, tells us more about this new platform.
For part 4, click here.