David Light's old firm Excitech has released a new tool that is free (for now) called Coordinate Scheduling Tool. It is intended to allow us to acquire X,Y,Z coordinates from certain Revit elements. It is currently limited to Revit 2010 versions and the 32Bit version of Windows XP/Vista (64 bit in development). This is an image of the Ribbon panel installed with the tool.
Here's a screen capture of User Options (snipped from their site).