It’s a good idea to create a more decentralized solution to share your parkour spots.

Unfortunately osm.org does not support custom POI lists.

The german OSM community is hosting a Umap service, where you could create a custom POI map. (https://umap.openstreetmap.de/en/)

The map can then be shared and the POIs can be downloaded as gpx, kml or similar file. This file can then be imported into any Map Apps.

For the photos… If you get the permission to put these under a Creative Commons License, then you can upload them to Wikimedia. Then put the link into the description of the POIs in the Umap

Unfortunately most of the species tagged trees are mass imported and not mapped by a real mapper.

I try often to map species or genus but there is no good mobile app for this task yet.

And here is the chart to follow the progress:

https://taginfo.openstreetmap.org/tags/natural=tree#chronology

We should see a saturation arround 3 trillion trees. (1)

You can easily help achivieving this goal by reworking natural=tree_row and adding single natural=tree into natural=wood areas :) I know, some say this is discouraged, but we really need to map EVERY TREE!

(1): https://www.nature.com/articles/nature14967

The person to the right?

Sometimes I even think about adding a Google Maps Link to POIs, because of Reviews. The reviews helping a lot to know what to expect from a POI before visiting them.

Thankfully there is no established tag yet.

I already contacted them, asked them to have a look on www.osm.org/copyright

I had the feeling the author is meaning rogue in a positive way here. At least the article sounds quite positive and impressed about that project.

same for hiking and biking routes. I found some obvious errors but I am not able to fix it with ID. I created some notes for them but since several monthes nobody fixed it.

So OP’s headline should be saying instead: Reminder to CHECK your ~/.cache folder every now and then