http://googlegeodevelopers.blogspot.com/2009/06/announcing-google-qualified-js-maps.html

[<<Last week at Google I/O we released the Google Maps API (JavaScript version) addition to the Developer Qualification program. Designed for professionals who currently develop or want to develop applications based on Google and Google-sponsored Open Source APIs, the Google Qualified Developer program will help promote developers to the Google community, provide credibility, and leverage the wisdom of the masses in rating and recognizing best in class developers.>>]

At first sight, it's for hardcore developers with high++ Google Maps API development skills