what is the meaning of this?

dieterdreist, agreed. I was cleaning up the map around the Hillcrest, San Diego, CA area and found Tourist Atrraction "Iliana's House" #4812119742v1, which seemed to be randomly placed in front of apartment buildings in a residential area, with no real-life place or object to corroborate it. Out of curiosity I clicked on this changeset it was part of and was shocked to see it explode to half of the entire globe, filled with completely random places from all over the world, with no rhyme or reason. I have a feeling these were their MAPS.ME iOS 7.2.4 bookmarks of places they personally traveled to, but not necessarily meant to be publicly mapped.

yes!!!