Confluence search does this, for our intranet. As a result it's barely usable. Indexing is a nice compact CS problem; not completely simple for huge datasets l

Confluence search does this, for our intranet. As a result it's barely usable. Indexing is a nice compact CS problem; not completely simple for huge datasets like the entire internet, but well-formed. Ranking is the thing that makes a search engine valuable. Especially when faced with people trying to game it with SEO.