I'm going to need some childcare soon too, so I've been poking around on Craigslist. Seems to be around $10 - $12/hr for one child, but not many people are posting their rates. http://neworleans.craigslist.org/kid/
I live in MS and pay someone $7/hr. But I've asked around and a lot of ppl pay only $6........which is too little I think.
I lived in Seattle and was Nanny and made anywhere from $10-$15/hr.
These are all rates for 1 kid.
It really does depend on where you live. My cousin in San Clemente CA pays her nanny $12/hr/child.