Hi folks.
I've been thinking perhaps OpenGuides needs the ability to have a comment or similar for some of its metadata. For example, this node is about a long-thin object: http://engineer.openguides.org/?Manchester_Ship_Canal
This makes it hard to provide coordinates. You could just make a point of always picking the middle of such an item, but what if you wanted to pick out the most interesting point?
Consider the Cloaca Maxima in Rome (http://en.wikipedia.org/wiki/Cloaca_Maxima -- no node in TE yet). It runs through the entire city but the most interesting point, from a tourist POV, would be its entrance into the Tiber.
So I'm thinking the best way to handle this might be multiple sets of coordinates with comments describing their purpose. So for the Manchester Ship Canal, you might say "Boat Museum on Manchester Ship Canal". Cloaca Maxima you might say "Entrance of Cloaca Maxima into Tiber".
Just some idle thoughts.