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Can somebody explain why would one ever want to use this? No trolling, I might be missing something here. I just don't see any use for it right now.

Aside from some of the other mentions, this could be pretty neat for someone who manages many WordPress sites, or any other CMS' for that matter.

Take a look at my comment, for my actual use case. https://news.ycombinator.com/item?id=11022768