Google's Best Kept Secret
That was, until SlashDot picked it up. So what is the project? "It's a lab of humans from all over the world (from China to The Netherlands, from Korea to Brasil) They are paid to check search results of Google every day. Most of the employees, called international agents by Google, were recruited through universities all over the world. The aim is to avoid spam, to get the right sites at the top of the listing and to test new features, not shown to the public yet." You can find more details about the site (with screen shots) here. More info will be on the Search Bistro site today (Update: Here's the followup).