There is very little diversity among founders in the Unicorn Club.

There's an opportunity to make your board - and your company - smarter by adding diversity, especially of gender.

I think there are many things that we can do today to make it a better work environment that is more supportive and encouraging of diversity.

Consider the social proof of a line of people standing behind a velvet rope, waiting to get into a club. The line makes most people walking by want to find out what's worth the wait. The digital equivalent of the velvet rope helped build viral growth for initially invite-only launches like Gmail, Gilt Groupe, Spotify, and Turntable.fm.

Starbucks did this magical thing where it took a product that people didn't really care that much about and made it this treat. It makes you feel better about your day and gives you a chance to reflect, makes you feel a little special.

I played with different words like 'home run,' 'megahit,' and they just all sounded kind of 'blah.' So I put in 'unicorn' because they are - these are very rare companies in the sense that there are thousands of startups in tech every year, and only a handful will wind up becoming a unicorn company. They're really rare.