There are definitely sites who's results I wish I could ban from my results. I won't visit them so they are just a waste of space. My short list, thillist, collider, vulture.
Also related to SEO I think is every cooking recipe seems to be 6 to 8 large images and a bunch of unneeded text followed by the recipe 8 to 12 screens down. AFAICT it's entirely not related to me getting to the recipe and instead either a pattern for SEO or ads.