According to the person who gathered this, "Other" just refers to anything that doesn't fit in the other categories. Says it's usually just stuff like "Hi there" or "good morning". They also say they gathered this data themselves, not with any sort of algorithm.
It roughly matches with what I've seen myself, but I'm not feeling a hundred percent on the method. Guess I'd have to see the tweets they documented for myself.
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MIMU
Oct 17, 2014 at 06:52PM EDT
burrson
Oct 17, 2014 at 02:59PM EDT in reply to