with @jasonrosenthal @benrbnWelcome to web3 with a16z, a show about building the next generation of the internet.Our featured guest today is serial entrepreneur Ben Rubin, who previously built the viral livestreaming app Meerkat, and then the group video chat app Houseparty — acquired by Epic Games in 2019 — and who is now CEO and cofounder of Here Not There Labs, which is building a decentralized messaging protocol.Rubin spoke with Jason Rosenthal, head of a16z crypto's CSX startup accelerator program, about paths to product market fit, given his journey in building breakout apps; they also discuss his unique perspective on creating company culture and more.This conversation first took place at our recent CSX program, which just concluded in London. (Watch the video interview on Youtube here.)As a reminder, none of the content should be taken as investment, business, legal, or tax advice; please see a16z.com/disclosures for more important information, including a link to a list of our investments.