just came accross this blog entry and thought you might be interrested: matt cutts keyword stuffing seo
well, i wouldnt buy a car or insurance from matt cutts. there was an article about onpage optimizing and someone asked "be default my page looks like this, should i spent some hours more work and redesign my site to look like that?" and the answear was "no, google gives absolutely no advantage if you do this" - but if you look at matts blog and the top google results for most keywords you find out that they all doing what is "no advantage".