matthewj Karma 13 Created 14 years ago Recent Submissions 1. ▲ How Marco Polo convinced me to start teaching (nathanbarry.com) 1 point · 12 years ago · 0 comments 2. ▲ How I Made $19,000 on the App Store While Learning to Code (nathanbarry.com) 8 points · 13 years ago · 2 comments All submissions on HN · View profile on HN