This is a nice presentation on the need for startups to be lean and how agile development can help the process. It would have been nice to have audio to go along with the presentation by Steve Blank (Board Member) and Eric Ries (Co-founder and Board Observer) of IMVU.
IMVU was founded in 2004 and is doing roughly $1 million per month in revenue. IMVU is a 3D chat service where you can pick and choose your own avatar and much like SecondLife, you can purchase items in the virtual world, using real world currency to buy in-world credits. I haven’t used IMVU but users can create items in-world that can be sold to other users for credits.