I usually contribute in areas I am somewhat familiar with. By ‘somewhat familiar’ I mean having been there at least once but my main area of interest are the eastern austrian alps. Hence the following description of activities:
I primarily incorporate meadow, farmland, wineyard and scrub polygons from this austrian open goverment dataset into OSM where this kind of landuses/landcovers are either not mapped yet or are not mapped sufficient enough in comparison.
For the latter I prefer to use the ‘replace geometry’ function of JOSM’s utilsplugin2 as much as I can to keep the history intact but naturally that’s not always feasable.
As a result of these landuse additions I also adopt the adjacent landuse polygons which are forest multipolygons most of the time. When doing that I also beautify these MPs by:
Addendum: IMO the key ‘landuse’ is to be taken literally: No matter if recently planted, clear cut or successive vegetation after a windthrow: landuse is still forerst - in contrast to landcover which is refelected in the key natural=*.
Contrary to the wide spread opinions that adding topgraphics on a small scale does not really enhance OSM and adding landuse is nothing more than a paintjob I’ve encountered numerous situations especially while off-trail hiking in which exactly those kind of mappings helped me out and therefore convinced me (and others) to contribute to OSM. Especially landuse, minor streams, minor powerlines etc. are standard features in official map products with the purpose to support orientation in terrain. With OSM beeing super portable and enabling a level of detail that has never been before, having these kind of things mapped is one of many aspects that makes OSM really stand out.
Whenever I encounter that kind of tags for example: building=yes name=Silo or sport=soccer name=Fußballplatz
I either delete the name or repace it with a proper name if avaliable. You don’t name a child “child” but rather “Kevin” or “Jacqueline”, do you? :)