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All accounts still have their signup delegation. Steemit inc isn't paying much attention to this I am afraid.

So it basically is already lost value, or at least "on the books" as already spent?

To-date only 0.5 Steem is actually given to sign-ups, the majority of initial voting power is only delegated to new accounts, it remains under ownership of @steem.

those were older accounts when the actually given Steem used to be more. That has all been taken, yes.

Thanks! I have only followed the signup method when I first started on Steemit, about a year ago.