It would be a very useful (ok, call it interesting) endeavor to form collections of resources based on theological viewpoints, denominational schools of thought, etc and then compare and contrast the search results based on those categorizations.
However, the personal time it would take to tag resources and or define collections along these lines make me a bit light headed just imagining the task. This would best be undertaken by groups of interested parties, but the ability to import and selectively apply tags to resources and share collection definitions would need to be available.
Does any one else see the utility of this line of thought?
Blessings,
John