Hello Leograph,

welcome to OSM and thank you for contributing to the database.

There are some issues with your recent edits I'd like to disuss:

- just a little nuisance: the area you work in. Please save and upload your changes in one city before moving on to the next continent. Here's an explanation in the wiki:
https://wiki.openstreetmap.org/wiki/Changeset#Geographical_size_of_changesets

- your comments are always the same "building". This isn't helpful. Why did you delete the building in Delbrück? Please give better comments and give a source for your information. This helps others understand your work.
https://wiki.openstreetmap.org/wiki/Good_changeset_comments

- please square your buildings when they seem to be square in reality. Simply use the key "Q" on your keyboard.

- in case of questions please refer to the wiki or contact the community. We can be found in many places online and are usually quick to help :)
https://wiki.openstreetmap.org/wiki/Contact_channels

happy mapping

silversurfer83