A social signal that you have $3?
Well, had $3.
If there will be an indicator like that, people may assume that the account that doesn't have it is worse in some way.
A signal that you're willing to pay something. The amount here isn't really relevant, and usage goes beyond social signaling.
If it's exposed over the API and someone's logging into my product with that flag set, you could reasonably assume it's not a bot, or at the very least that whoever's botting has paid $3 of their own money.
Had. Last month.
> to indicate I'm a Blue subscriber? Maybe a smaller lighter blue checkmark?
Or at least a medal emoji. Are blue checkmarks so popular that everyone is excited to have two, why is social signal so important for you?
Photoshop in a mini blue check mark in your dp, who is gonna care, they will just thinks its a feature.
If anything, I would want it as a social signal rather than the features.