BellSouth Informative - Bellsouth to rig the Internet
This article puts it better than I could. The gist of the matter is that Bellsouth wants to be able to start a bidding war between Yahoo! and Google or FedEx and UPS, for example, over which site gets to the users faster.
While they claim that performance would not be degraded (anyone believe that?), it would still have the effect of making one site look slow and broken compared to the other.
Just wanted to spead the word. Any Bellsouth users who find this offensive should definitely contact BS and let them know how you feel.