Muahaha.. my chance to get back at my biggest critic
j/k, But I have a feeling you just started a flame-me thread here Joe...
I mean 20% for the person that is in charge of all the promotion, design & initial bandwidth? Sounds like all this person would need in addition to that would be elance.com ($10/hr coders all day long) or a nicely posted request for a 20% coder partner here.
Anyway I think it should be the other way around 20% to the coder 80% to the guy in charge of promo and design (usually someone GOOD at this wouldnt be really good at both, so the design would probably need to be contracted out to other companies)
Anyway thats my "I didn't read the complete post or visit the links as you suggested" comment
(Joe knows what I'm reffering too).
But your marketing/idea guy is by far the most important - if you cant bring anything to the table in that field. I would think that spot is worth 50% to start. Most owners are usually the marketing/ideas guys and probably wind up taking up just about that.. 50% of the profits.