"woger151" <woger151(at)jqpx37(dot)cotse(dot)net> writes:
> I assume it's harmless to drop the database named "postgres" (named after
> the DB superuser)?
You might want to recreate it afterwards, since various tools expect it
to be there (for instance createdb, createuser, "psql -l" will all fail
by default if it isn't there). But there's nothing especially magic
about it.
regards, tom lane