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-->But it's far from obvious. One of the cloned services listed is Pinterest. Have a look at these [1][2][3] sites. All three of them were made by Hungarian companies and [1] was financed by one of the largest media companies in the country[4]. So something like Zkombinator is not that big a step from what is already going on.
[1]: http://www.bigin.hu/
[2]: http://tuzd.be/
[3]: http://kirak.at/