The most infuriating thing is that both of these examples of fantastic tools to help people find things on maps actually uses #OpenStreetMap as their background map layer that they show the points of interest on top of. You can even see the things in the map that's registered in OSM, but not in the data points on top of the map!
See this example of a registered playground and an unregistered one.
Instead of just using the data already there, they make people do extra work, for a worse outcome.