DWExpo recently posted a blog on why they were founded. They basically saw a need for developers and marketers to learn more about each other's fields and have the opportunity to come together and innovate, instead of constantly bumping heads. Its interesting how much value they see in cross-discipline education and thier approach to meeting that need. Looks a lot like a new-age Comdex. Definitly worth a read.
I'm interested in initiating discussion on the need that developers see for integrating tech and business.