
Zappos, the hip online shoe company that's pulled massive traffic via tiny ads in the backs of magazines, offers new employees a "Quit Now" bonus of $1,000 after the first week on the job. About 10% of call center employees take it. As John Moore notes, brilliant.
Why would Zappos do this? To cull the herd. Zappos has a culture where employees love the company and go above and beyond, and so it wants to know if you are in or out. A little cash today avoids a lackluster employee tomorrow.