text: Yeah, we had some trouble with 3 accounts that engaged in blindly tagging 'house' everywhere over the past months. (see https://www.openstreetmap.org/note/1832975 [german] for reference and the active blocks of the users mentioned there). I was waiting for some kind of reaction but I think I will start a complete clean-up session for the whole area this week. If you want to participate let me know, otherwise thanks for noticing. :)