I just discovered this site - diaperbeagle.com. It appears to be a great resource for the various cloth diapering options, and also has a price comparison feature for finding the best prices at online retailers.

Also interesting is the Real Diaper Association:

The Real Diaper Association, a nonprofit 501(c)(3) organization, provides support and education to parents all across the U.S. for the use of simple, reusable cloth diapers. The goal of the Real Diaper Association is to put more U.S. babies in cloth diapers. To do this we aim to create a cultural shift in understanding cloth diapers-their environmental impact, their ease of use, their accessibility, and their acceptability. The Association will help parents understand that cloth diapers are real diapers.

Their long list of “why choose cloth diapers” is awesome. If your mother in law thinks you are insane for choosing cloth for your children, send her here. The first two health concerns of disposable diapers are pretty compelling in unto them selves:

Disposable diapers contain traces of Dioxin, an extremely toxic by-product of the paper-bleaching process. It is a carcinogenic chemical, listed by the EPA as the most toxic of all cancer-linked chemicals. It is banned in most countries, but not the U.S..

Disposable diapers contain Tributyl-tin (TBT) - a toxic pollutant known to cause hormonal problems in humans and animals.