[roywiggins]

Google Photos has some AI tied into it- it tries to autotag photos into categories like "selfies" and "concerts" and "Christmas" (to name a few at random) and it isn't completely perfect, but not horrible.

Not so useful for me, since I don't care to upload my entire photo collection to Google. Something like this that either works offline or can progressively tag photos and insert those tags in a format Lightroom could read would be awfully useful.