According to the October 6, 2014 issue of AdWeek, members of the Millennial generation belong to social media networks in the following percentages based on a survey sample of 100 (81% iPhone owners):

Facebook 91%
SnapChat 56%
Twitter 44%
LinkedIn 39%
tumblr 31%
Pinterest 23%
Google+ 17%
Vine 15%
Ello 4%
MySpace 4%

The Ello Manifesto:

Your social network is owned by advertisers.

Every post you share, every friend you make and every link you follow is tracked, recorded and converted into data. Advertisers buy your data so they can show you more ads. You are the product that’s bought and sold.

We believe there is a better way. We believe in audacity. We believe in beauty, simplicity and transparency. We believe that the people who make things and the people who use them should be in partnership.

We believe a social network can be a tool for empowerment. Not a tool to deceive, coerce and manipulate — but a place to connect, create and celebrate life.

You are not a product.