It’s funny, I remembered immediately the blog post Jason wrote about buying the Mahalo domain and not knowing what to do with it back in November last year.
Here’s how the FAQ page explains the model:
Mahalo is the world’s first human-powered search engine powered by an enthusiastic and energetic group of Guides. Our Guides spend their days searching, filtering out spam, and hand-crafting the best search results possible. If they haven’t yet built a search result, you can request that search result. You can also suggest links for any of our search results.
Interesting – so it’s Google crossed with DMOZ crossed with Wikipedia. Kind of.