Eric Ries is the founder of The Lean Startup, a methodology that startups can use to get traction. Eric explains the methodology in detail and answers some very specific questions about it. The first Lean Startup conference is actually this Friday (in San Francisco), and will be broadcast live.
Note: If you are super familiar with Lean Startup thinking, you might want to skip to 14:30.
For more, check out the Traction Book site.