Even if this was proven as fair use, it would be quite difficult to make a usable search engine that didn't present at least some of the content back for public

Even if this was proven as fair use, it would be quite difficult to make a usable search engine that didn't present at least some of the content back for public consumption. Imagine if Google search results just had a bunch of links that said, "link 1", "link 2", etc instead of the title and summary of the page.