I was actually thinking about this on the plane today.... quite a bit.
With your approval/permission/invitation, I'd very much like to write the forward for your book, along with editing the entire thing.
I have some more ideas on this too, and wouldn't mind being a bigger contributor if you are interested. I also thought up some marketing type ideas for you - nothing crazy, but I think I could definitely help you out. I'd be willing to do all of this for free, btw (if you insisted on giving me a SMALL cut of the revenue, I wouldn't say no, but it would need to be small)... my motivation here isn't for the money. I really love the idea of you going forward with this and want to help you any way I can.
Feel free to PM or email me if you'd like to talk about this more. And let's see how polished you can get this thing by the end of the weekend. It will give me something to read on the plane on Tuesday.