Hi Alex, there was a PDF for download on the learnosm website. I know Jeff Haack had access to the gdocs version though it was not structured the same way as the other language versions because IIRC we had problems generating a single PDF from multiple docs. I’ll share the gdocs with you if I can find it.

It look like the Polish version of the guide is gone and it’s not in the repository either. Is there much work needed to re-add it? Cheers

This is a spam post.

To be pedantically correct, even though it doesn’t matter to the original question, the Contributor Terms don’t ask you to only upload ODbL-relicenseable data. Instead they require compatibility with the current license.

This fact has been discussed at length on the mailing lists with a lawyer weighing in too.

@MapMakinMayers’s: in short, accepting the Contributor Terms should be enough for the community to be able to continue to use your contributions.

(The values of all of these tags would contain a future date for the operation, I wrote that using angle brackets and they were filtered out of my comment above)

I think the idea of start_ and end_date was so that you could leave this landuse=construction in the database forever, as well as map the playground before it even exists, and have all of the programs concerned with just the current data ignore them at any time outside of the start_date - end_date period. At the same time programs which are concerned with historical information could use this data in different ways.

Obviously there are many arguments against doing that or against historical mapping inside the OSM database and it's hard to decide one way or another. For construction works I have seen a more plausible tagging proposal somewhere on the wiki, using the three tag suffixes:
:ata_create=
:ata_modify=
:ata_delete=
and the tag ata_delete= which would list operations that should automatically happen to a given tag or the entire object on a given date. Someone could then run a bot to execute those commands. Again there is a couple of arguments against this, but I've seen it used sometimes.