Today I found out that it’s actually a lot easier to contribute to Open Street Map than I thought. There are some serious gaps in house addresses in my area and I was painstakingly using the built in browser editor in the browser.
But, you can use a FOSS app (available on fdroid) called StreetComplete that makes it a lot easier to help out filling in the gaps in your local map data.
It’s really fun - kind of like Pokémon Go but you are actually making an impact 😁
I recently contributed a business change and got a message a few hours later that I had made a mistake and a small explanation on how to fix it.
This probably depends on the area, but at least changes in my area seem to be monitored by good people.