Should reputation from SO carry over to Meta?
Stack Overflow and Meta seem like the same site; shouldn't they have the same karma or reputation?
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Because that's not how Meta (this site) has worked traditionally and there are overwhelming reasons to keep it this way.
Meta used to cover all 3 sites: SO, SF, and SU; however, you'll notice meta.SF and meta.SU are like the new SE meta sites (in particular, they share rep with the parent site). Even dropping out SF and SU questions, Meta still covers much more than SO, such as the Stack Exchange Data Explorer, is the main site to report bugs in the SE engine, and still provides all-SE-encompassing discussion & questions in a multitude of various ways.
In order to make Meta follow the other metas, we'd need someone to sort through all the questions and create yet another site to host the non-SO bits (or re-use meta.stackexchange.com, but then the content from the SE 1 meta has to go somewhere, and I doubt merging is a good idea—yet). This would wreak major havoc.
This has been proposed before, but I can't find the link after well exceeding my search patience. :)