Blue Jays commercials used to be so much cheesier in the 90's
http://www.totalprosports.com/wp-content/uploads/2010/01/Vintage-Roberto-Alomar-McCain-Catch-The-Taste.jpg
Hmm... yes you're right, if you power off and on you will sometimes get a new IP, not sure the frequency. Though the IP would still be similar since it's part of the same subnet.
Why on earth are we trying to "guess" who is/was who on this board [using multiple accounts]? Admins/mods should be able to just check their IP... this is not rocket science.
http://www.vbulletin.com/docs/html/users_ip_addresses