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^ This is how to get ahold of dang. Dang has also stated many times that `@dang` is a no-op, I don't know why people keep using it.

Possibly that they didn't see any of those statements?

It's a Twitter idiom. Why would anyone expect it to work here, of all places?

wowfunhappy said, "I don't know why people keep using it."

so maybe it's an idiom that's spread beyond Twitter.