Validade landuse=* on nodes

[naoliv]

landuse should be used to describe the usage of an area.
Its wiki (​http://wiki.openstreetmap.org/wiki/Key:landuse) also says that it should be used only in areas.
I see a lot of people wrongly using a single node with landuse=residential, for example (one example using South America: ​http://overpass-turbo.eu/s/2ku)

Could JOSM give a warning about using landuse on nodes?

/* needs a better phrase :-) */
node[landuse] {
        throwWarning: tr("{0} should be used only in areas", "{0.key}");
}

[Don-vip]

In 6790/josm:

fix #9651 - Validade landuse=* on nodes

[aceman]

This could be used on a point if the mapper didn't know where the area spans. He could just mark node that around the node there was landuse=x to unknown span.

So is the intended workflow to just mark some guessed area, tag it landuse=* and source=guess or something?

I do agree with the patch here, I just want to cover all usecases.

[naoliv]

Replying to aceman:

This could be used on a point if the mapper didn't know where the area spans. He could just mark node that around the node there was landuse=x to unknown span.

Yes, sure (I saw some people tagging landuse=farm on a node here, probably to say that the place is a farm).
Maybe to play safe, it could be demoted to informational level, like "highway without reference". A highway could have no ref at all, but the message still informs the user to verify the data.