"Be excellent to each other."
Here's why the companies were so successful, according to the founders:
Neil Blumenthal, co-founder of Warby Parker:
We find that 50 percent of the people coming to our site come from word of mouth, and because we do good, we feel like that's a big part of generating that buzz.
Lincoln Brown, co-founder of SoJo Studios:
We have around 450,000 players — around 2.5 percent of them pay for goods in the game. We give around 50 percent of our profits — but no less than 20 percent of our revenue — to social good.
It turns social games from a guilty pleasure into something gamers feel good about playing.