It would be my preference that EMD's held MORE value and by giving EMD's very strong signal strength it would actually limit the spam sites out there. Why? because EMD's would increase dramatically in value and likely be acquired by real business people looking to build real businesses. It makes sense, would clean up the SE, increase the value of domains and promote the best results to the top.
What we have going on now though is the opposite, everyone's just trying to figure out hot to game Google and many companies are just going to throw the SEO strategy in the trash, and then put that marketing budget to use for Adwords. This is great news for Google's revenue's.