
An era has ended for the first API that really made mashups mainstream, most famously via housingmaps.com, a mashup of Craigslist rental search results and Google Maps. Unlimited access may no longer be available for free, but some observers say it's a good move for the developer ecosystem. "For some developers this can clearly be an issue but overall it's healthy for the ecosystem," John Musser of API watch-dog site Programmable Web told us tonight. "Services need to be sustainable with business models that work for both sides."
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The free vs commercial nature of Google APIs and the Maps API in particular have always been a little unclear.
"Given the value these APIs give and the cost of running them," says independent Australian developer Daniel Treadwell in words echoed by many people, "I think charging for it isn't a problem at all. The last thing anyone wants is for it to be retired like some others have been."

It's extremely unlikely that the Maps API would ever disappear altogether, but even if it did there are already viable alternatives including Open Street Map and MapQuest.
So far, though, many developers appear satisfied with the way Google is handling this transition tonight. That's good for the future of location-based application development and innovation. Google Maps is a living, breathing, changing, incredibly valuable resource. If you wrote an app that has got enough traction that you're cranking on that API past a certain limit, paying something for it certainly seems fair.
