MapReduce in F#

I came across the following link on MapReduce implementation in F#

http://www.twine.com/item/1229c60s4-4q/exploring-mapreduce-with-f

Also Microsoft is working on C# implementation known as LINQ to DataCenter.

For those who don't know MapReduce should think twice as anyone using google search is the user of MapReduce algorithm.

Wikipedia has clear explanation of the MapReduce http://en.wikipedia.org/wiki/MapReduce