The "Cheryl's Birthday" Problem

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Well, I ran across some stuff that made this sound like some amazing problem...like the next Monty Hall problem or something.
Seems like just an ordinary little logic puzzle to me...takes about three minutes to figure out. Kinda fun, but IMO completely unremarkable. Nowhere near as hard as your average Smullyan-esque knights and knaves problem...
Which isn't to say that it's not fun. It's just not some big deal.