|place = continent|
|One of the seven continents: Africa, Antarctica, Asia, Australia, Europe, North America, South America|
|Used on these elements|
|Tools for this tag|
Given low number of continents, fact that collecting this data on ones own is easy and that depending on OSM data is not useful (moving, deleting or changing name of place=continent node would have massive impact on a map) and that it is desirable to tweak label placement for specific map it is dubious whatever this data is useful.
Also, "One of the seven continents: Africa, Antarctica, Asia, Australia, Europe, North America, South America" is a subjective selection, there are competing methods to divide landmasses into continents.Fortunately, seven nodes are not significant clutter and worth reduced risk of someone mapping continents in a far more damaging way.
The continents of the earth are tagged with this.