Please allow me to see everybody that has set his coordinates to a city, when multiple people choose simply the coordinates for the city from the database instead of their exact home coordinates.
For example, there are at least two people in Curitiba:
http://www.ohloh.net/accounts/6356 http://www.ohloh.net/accounts/3677
But I can't see the first one in the map (Caio) because the marker for Arnaldo is on the same place. Maybe there are other people from Curitiba in Ohloh and I don't know because their markers aren't visible.