Tordanik
(Tobias Knerr)
3
It should be noted that these rules only apply if you want to import data into the public OpenStreetMap database. It’s not a problem as long as you only open and export data locally in JOSM, for example, as long as you do not upload to OSM servers.
There appears to be a plugin called OpenData for JOSM, which has support for opening shapefiles (haven’t used it myself yet). You could then easily save the result as an OSM XML file, which is supported by most tools from the OSM ecosystem.