Seth Godin

Free Prize Inside and Purple Cow-Disk 01
Free Prize Inside and Purple Cow-Disk 03
Free Prize Inside and Purple Cow-Disk 05
Linchpin
Permission Marketing - Disc 1
Permission Marketing - Disc 2
Survival is Not Enough (Zooming, Evolution, and the Future of yo...
The Dip
Unleashing The Idea Virus - Disc 1
Unleashing The Idea Virus - Disc 2