Have you ever been charged an estimated amount on your bill? At times, the meter reader can't or won't come to actually read the meter and then an estimated bill is drawn up. This usually reflects your past usage, from a year prior. For those of us who are always trying to save, it's probably not very accurate, as our usage becomes lower and lower. It also really depends on the weather as far as things like gas, electric, and sometimes even water, are concerned. I'm not a fan of the estimated bill. They do always adjust it for me later, but I don't like having to pay more up front when it's not correct. What say you?