eHow is making out because their content is unique. It's crap, but it's unique, if often thinly rewritten from other sites. There aren't any sites of any standing duplicating eHow's content, because it's crap, there's no reason.
Mom-n-Pop sites with serious content that has been duplicated all over the web (and repurposed into 3 steps by eHow contributors) are getting hit by 50% in this latest update. Google has lost the ability to deal with duplicate content.