As far as using mirrors goes ... there is absolutely no current benefit to using them. They all go to the exact same physical IP address, so they are hitting the same machines:
www.whatifsports.com. 37426 IN A 50.56.22.84
www.wisjournal.com. 86400 IN CNAME www.whatifsports.com.
whatif.cincinnati.com. 600 IN A 50.56.22.84
The only thing different would be how your browser treats the sites ... so you could have different cookies and cache for each. But they are exactly the same hardware, at least they are right now.