I live in Bulgaria. I have noticed that many places (mostly towns and villages) have inaccurate coordinates.
E.g.geoname.geonameid=733608
It gives the location as being in a field 1.2 KM outside of the village of Asparuhovo.
I was looking for the means of correcting such errors, thereby improving the quality of the data set - but I cannot find how to do it from within the GeoNames web app.