Joshua Schachter is the founder of del.icio.us and inventor of tagging, which became hashtags. Joshua has founded two startups, invests in startups, runs an event for autonomous racing called Self Racing Cars, and is an amateur race car driver. Follow him on Twitter @joshu.   For show notes and transcript visit: https://kk.org/cooltools/joshua-schachter-founder-of-del-icio-us-2/   If you're enjoying the Cool Tools podcast, check out our paperback book Four Favorite Tools: Fantastic tools by 150 notable creators, available in both Color or B&W on Amazon: https://geni.us/fourfavoritetools