But it did happen. A few years ago we (as in estonian + russian communitites) helped import building outlines and most roads to OSM: https://lists.openstreetmap.org/pipermail/imports/2013-March...

Hi, we at Maps.Me do this for Brandify: we've recently helped them import 4k of Walmart stores across the US, and next week there will be a few hundred fitness centers. While importing third-party data is hard, it is possible, and I am working to make that a norm for OSM. Google "OSM Conflator" for details, write to iz@maps.me if you need help.

font-family: Helvetica, arial, nimbussansl, liberationsans, freesans, clean, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";

font-size: 13px;

line-height: 1.4;

Thank you. I found this: https://github.com/rreusser/the-old-github-font

Searching algorithms were completely redone in this release. Give it a try.

I know of that website, it is made by a fellow OSMer, and while it's perfect for creating and editing GeoJSON, it lacks in simplicity of sharing maps (well, it depends on an external site for that). For example, MapBBCode Share maps can be embedded into posts on any forum or blog with MapBBCode plugin installed. Both sites were made with the same technology stack, though, namely Leaflet + Leaflet.draw.

And of course MapBBCode Share maps can be loaded in geojson.io: for example, http://geojson.io/#data=data:text/x-url,http%3A%2F%2Fshare.m... (replace zdjzk with map id).

Oh, thanks for reminding. I was told this before, but forgot.

Click the "Export" button, there will be a list. Basically, almost all of those: https://github.com/MapBBCode/share.mapbbcode.org/tree/master... (except html, iframe, nmea).