Dadslib,
Re Waste Reduction: if you read the WEN study they go into detail about the practicalities of recycling the components of disp. nappies. It is possible, but very impractical. Cloth is a better choice for waste minimisation. Landfill space is a big problem in this country, and incineration the only other viable option. But incinerating plastics releases nasty pollutants. Long-used cloth is a much better option.
I don't think cloth nappies are "the" most green thing we can be doing, but every little bit helps, no? What ever happened to "Think globally, Act Locally."?
I also doubt WEN is 100% unbiased, but WEN's main mandate is to come up with environmentally best answers, not to produce profits for their shareholders. The opposite holds true for the big disp. manufacturers. WEN's only influencing bias is some WAHMs making nappies probably also support WEN. But most WEN supporters are not nappy makers!
I can't accept that green actions by individuals lets corporations off the hook, (although it probably lets other individuals off the hook). The govt. keeps separate accounts of company "greenness" versus domestic or govt. "greenness". Anyway, if we all switched en masse to using cloth, Pampers would start making real cloth nappies, too. They aren't stupid.
As for helping economies... a large proportion of cloth nappies are made by WAHMs. This means the nappy price goes straight to relatively low earners, who in turn tend to return a large proportion of their income straight back to the economy. A shareholder in Pampers, for instance, would be more likely to put extra profits into property or more shares; those investments promote the economy less than buying tangible goods (like clothes & food for your family). Just as taxcuts aimed at the poorest communities in society tend to do the most to encourage economic growth (unless you believe in "trickle down" or "supply-side" economics, which never seem to have caught on this country, mercifully). When you give the poor more income, they go out & spend it on things. Give the rich more income, they save it up for a rainy day. So, buying from your local nappy maker does more good to the economy as a whole, esp. the economy to the WAHM, than buying disps (or anything, really) from a large & profitable corporation.