At least eHow often credits the original author of the page that an eHow rewriter has copied and rewritten to create their own "original" content. My site is on a ton of eHow articles as a source. It would be very easy to rank the source articles higher than the ehow rewrites. Given that Google doesn't do that, it seems they like the eHow content better. I guess the takeaway is to emulate eHow, dumbing down your content and learning from the eHow site structure, etc.