Kevin, I know public is there from using it every day, but if it were not for you post I would not know how to prove it, none of the views, graphical admin tools etc. display it as a user.
We found this issue because we can grant privs to public on a table, but could not revoke them. If I did not "know" that public was there ( because in my experience it is there in oracle, sql server and the Informix dbs) how would I check for it's existence on Postgres?
Thank you, Kasia
"The key word PUBLIC refers to the implicitly defined group of all roles."