[Certain]

To be transparent, ...the Munster and Silver have no shared IP addresses logged on this site.

But IP addresses can be very shifty, in both directions. For instance, I am logged as having shared IP addresses with Aero, Knux, Philly, Tettris, Bender, dyedinthewool, Alvin Karpis, Badweather, Destroyer and dead man. I am none of those people. Meanwhile, it's possible (though I don't know the steps, exactly) to use a separate browser and an IP reroute to use two accounts simultaneously from one computer under different IP addresses.