In 2011 there was a thread explaining that StackOverflow should only be used for VBA questions while everything else should be on SuperUser.
In 2012 there was another thread marked as a duplicate which says SU should be used for everything, and that SO is only for VBA and UDF (user-defined functions).
Yet here we are in 2013 and there is excel-formula with over 1,500 questions (85 in the last month).
What makes things more confusing is that the excel excerpt says:
Microsoft Excel is a commercial spreadsheet application written and distributed by Microsoft for Microsoft Windows and Mac OS X. If your question is about programming Excel in VBA then also tag it excel-vba. If it is about an Excel formula or worksheet function, then also tag it worksheet-function.
The wiki itself says:
Questions tagged with excel should be version-agnostic. More specific tags include excel-vba andvba for scripting, excel-formula and worksheet-function for formulas and pivot-table for pivot tables. Questions about addins should also be tagged excel-addins.
Am I missing something here? It would seem to make sense to put the various Excel questions on the same site to get a more coherent audience. Instead they seem to be split willy-nilly and there isn't much consistency. Can anyone explain what the heck is going on here and where excel questions really should belong?