When will Google let us run our own Map/Reduce programs?

After reading about Sam Ruby's issues with JSON for Map/Reduce, it got me thinking. How long before Google will let us run our own Map/Reduce programs on their clusters?

We all know, one of the best ways to scale is to push the operation to the data. And who has all the data? Why, that's Google, of course. They are in a perfect position to host and run applications which map/reduce the web for individuals or organizations.

Imagine that I want to start collecting results by microformats such as hCard. It would be nice to formulate a query which understands microformats as a map/reduce and send it off to Google.

Facebook got this right by creating a Platform. Developers can write applications which link directly into Facebook. I want to do the same with Google.

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