I’ve been working on a GIS project for the last few years, and the one challenge that doesn’t go away is how to easily collect Latitude & Longitude coordinates for locations.  Today I discovered LatLng Marker within Google Maps Labs.  Here is a description from the tool author:

Adds an option to the context menu that lets you drop a mini marker showing the latlng of the position that the cursor was pointing at when the context menu was evoked

Thanks Marcelo C for creating such an awesome tool.  I’ll be using this in my GIS projects.