Cuil claims to have better search results than Google and others, “based on how they index websites,” says TechCrunch, going on:
“They do not simply catalog keywords on a site and then rank the site based on its importance. They also work to understand how words are related (France - cheese - wine, for example), to return more relevant results to users. This is a semantic approach to search, but very different from Powerset’s natural language approach.”
Powerset, “uses artificial intelligence to try to understand what sentences on a website actually mean” but Cuil, “simply tries to properly categorize and file a web page, even if the category name doesn’t appear on the site.”"