There is a TwinPage with an operational definition on Meatball.

Now each Wiki can be each other's TwinWiki, if there is enough love between the two wikis.
A handmade CommunitySolution can be the precursor of a TechnologySolution.

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<=> http://www.usemod.com/cgi-bin/mb.pl?TwinWiki

<-> TwinWikis, TwinPages, TwinPage