I don't mind the admin tag. Only users on my own instance can see it and I like being accessible to them. I think I've brought out the "mod" voice about twice, ever.

Edit: oh to answer OP's question, I have a couple of alts - all the same username and used to test different apps or federation. I don't know if there are any instances blocking aussie.zone, but I'd use them to check if a user makes a query. I only comment/post with this account.