What’s the best way for a solo entrepreneur to market their product? Pirijan is creating Kinopio, a spatial canvas on the web, and he publishes new features as screenshots or short demo videos on Twitter. He talks with Mark and Adam about how personality and building-in-public are a unique advantage of small teams; PC Magazine versus YouTube influencers; and why the struggle of building a business is best shared in realtime. Plus: choosing a tool based on vibes.