Although not North America, interesting story out of the U.K. Daily Mail concerning just how much more revenues retail suppliers are able to extract from "sticky" (or loyal) customers, as opposed to those who shop around.

This issue came up during the Connecticut retail market hearings this week -- the "boiling frog" theory, in that, if variable rate suppliers only increase rates marginally each month, the customer won't be prompted to switch because no one increase creates sticker shock.

Check out U.K. Daily Mail to see what British suppliers are doing