Wikipedia's Jimmy Wales yesterday announced plans for a search engine yesterday to challenge Google.
As of this writing, very sparse -- no entries for "congress", "usa", or "music". Of course there's already an entry for "seo".
Monetization, of course, via AdSense (ironic?)
I'm dubious. Since inception, the web has been too large and too fast for human editors to keep up. The future of search is algorithms and clickstreams, not editors.