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Well, I actually dont use them often. I just thought they would work quite well as a "lead-in" for some fun facts (I'm trying to do daily emoji-based trivia posts). I think they are appealing because they seem specific but are in fact very vague. When I think about it, it is the same with pop music (think love songs) or fortunetellers.

Yes ,i see your point. Maybe vagueness is nice sometimes.