I agree with Kellys eye. It should be nice to know which are which.
I have admin on JB, but I didn't bought it, although I did donated.
I also have to agree with Rawr+, there's no need for personal information to be exposed for others. If someone wanted to buy admin rights and didn't had the patience to wait, then he wouldn't do as admin.
Piranchas is the only one who can confirm the payment so no one else without him as Rawr+ said can't accept any player as paid admin.