Ask HN: What was your best passive income in 2017?
Previous posts:
https://news.ycombinator.com/item?id=13150144
https://news.ycombinator.com/item?id=10726489
https://news.ycombinator.com/item?id=4639271
https://news.ycombinator.com/item?id=6661536
https://news.ycombinator.com/item?id=7094402
https://news.ycombinator.com/item?id=8107588