Substack was founded to create an escape vehicle for writers: Chris Best and Hamish McKenzie imagined a world where writers didn’t have to rely on legacy publications or corporate advertisers, but could instead create a more direct and meaningful relationship with their audience. Despite early skepticism, Chris and Ham

Duolingo co-founder Luis von Ahn joins Guy on the Advice Line to answer questions from three early-stage founders. Plus, Luis shares insights on how data can help entrepreneurs understand what their customers really want. First, Steph in Chicago wonders how to manage expansion opportunities for her art-filled vending m

What started as a design project for Stanford student Evan Spiegel quickly flourished into one of the most-used social media platforms in the world: Snapchat. It only took two years for Mark Zuckerberg to make a multi-billion offer for the company. But Evan turned it down — convinced of Snap’s potential to disrupt huma

Bonobos co-founder Andy Dunn joins Guy on the Advice Line to answer questions from three early-stage founders. Plus, Andy shares the motivation for his latest venture, Pie—a new social app that fosters in-person friendships and experiences. First, Michele in Connecticut asks about the best way to position her tennis-in

During its formative years in the late 1990's, Paypal attracted an extraordinary group of young entrepreneurs, who then went on to build some of the best known companies in tech. They became known as The PayPal Mafia—and Max Levchin was one of the leaders. A computer genius from Soviet Ukraine, Max joined Peter Thiel,

Airbnb co-founder Joe Gebbia joins Guy on the Advice Line, where they answer questions from three early-stage founders. Plus, Joe shares an update on his latest entrepreneurial adventure: Samara. Today we meet Marina in Texas, who’s wondering if her language-teaching singing books need to be on Amazon. Then Ray in Cali