This is dynamically loading overlay of Virtual Earth Map tiles for Monterrey, Mexico produced in order to provide an illustration and a way to evaluate the quality of the services offered. It is a list of links with corresponding coordinates stored in a series of text files - it is not software (as described at http://msdn2.microsoft.com/en-us/library/bb259690.aspx).
As the tiles are hosted on Microsoft's servers by loading this overlay YOU may, and probably are, bound by their terms and conditions (which can be found at http://dev.live.com/terms/), specifically 1. (2) Virtual Earth: free up to 3 million map tiles/month.
If you choose to host this, consider that you may well be asked to take it down. Microsoft may also block specific user-agents in the future, which could prevent this overlay method from working.

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