Obvious... Who charges $1/year is going for the money? it is not worth the hassle. 

preparing for universal digital ID or fighting bots...? Or both?

I would kill accounts that do not post in human like patterns.
Yep, there are robots who post in human-like patterns, but if somebody cares enough to keep them, he will pay for them, even if via a thirdparty or front operation.

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