Alexis Ohanian — American Businessman born on April 24, 1983,

Alexis Ohanian is an American internet entrepreneur, activist and investor based in the Brooklyn borough of New York City, best known for co-founding the social news website Reddit, helping launch the travel search website Hipmunk, and starting the social enterprise Breadpig. He is a partner at Y Combinator, and is also the executive chairman of Reddit. Ohanian is currently dating Serena Williams... (wikipedia)

Being effective at social media, whether for business or personal use, means capturing people who have short attention spans. They're only a click away from a picture of a funny cat, so you have to make your thing more compelling than that cat. And that can be a high bar.
It takes discipline not to let social media steal your time.
My junior year, I went to an LSAT-prep course. I flipped over my test and thought, 'You bastards.' I walked out and went to Waffle House. That's where I had what I call 'The Waffle House Epiphany': I didn't want to be a lawyer. I wanted to make a dent in the universe.
The reason people need advice on using social media is that they're a much more complex and nuanced way to communicate than a conversation or email.
The social-media landscape changes incredibly fast, so you have to be open-minded and nimble to keep up with it.