When I switched ISPs to USWest, I kept my old Teleport.com account (since I've used that e-mail addy for years) and never used my uswest.net account at all. After about 4 months of having both ISPs, I decided to just go with the USWest.net account. When I logged into the mail server for that account (one that I set up and never used)... I had over 4000 spam e-mails for 4 months.
MiniD