Try posting and you'll see what I mean. At the bottom it says "Topics help users find your post. Please select one or more topics."
The ones offered are very general. If I wanted to help users find my post about blend modes, I see no tag down there that I could click that says "blend modes" or "blending" or "multiply" or "overlay". Instead, I can choose "macOS" which applies to everyone with a Mac.
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