2018-12-19 UTC
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[tantek] u-featured is also a way to markup a "visual meaning" image or photo that is part of an article but *not* a photo post itself. in that case as well, the image *is* visible on the post itself, and marking it up with u-featured helps communicate that that is the image to use in any link-previews, rather than guessing at any random (or first) img tag (which may be the author's icon)