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Would that be a little guy permanently on the page even if the user isn’t present, or a permanent persona for a user across visits?

A permanent persona for a user across visits. Could even be across website visits, if they all use townsquare.

go further and let me have the same persona in townsquares across various sites. or have you already described why you wouldn't want to do that?

That's what o meant. Same persona in Townsquares across various sites. You would recognise me on my site, on your site and John's site.