I was asked on the NetNewsWire Slack group about supporting nested folders — folders inside other folders — and I realized the answer deserves a blog post, because it brings up some larger issues.
But first, some technical stuff.
RSS readers have moved over the years toward tagging as opposed to folders.
A structure where feeds can have multiple tags is the same thing as a structure where you have multiple folders but not nested folders, and a feed can appear in more than one folder.
So that’s what NetNewsWire does, because this looks like a de facto standard to me.
That’s part of the reason, but there’s more…