[dang]

That would indeed be unambiguous. But it would also be verbose and there's something about that which doesn't fit the HN spirit.

I don't know that unambiguousness would even be all that helpful. I have a feeling that all the same complaints would continue, they'd just route around it, as the old internet adage goes.

[beaner]

How about [user flagged] and [mod flagged]?

Just throwing 'em out there.