Would make SEO much easier, and I guess would increase the amount of spam on Google. Any website can return the search results that it would like. I guess sea

Would make SEO much easier, and I guess would increase the amount of spam on Google. Any website can return the search results that it would like. I guess search engines could apply a score to each site so that those who spam, get down-graded, but then how would they do the scoring? By crawling? Then you still need a crawler and might as well build your own index.