You didn't mention where link building fits, but according to SEOMoz's big survey, it's 66% of what drives rankings. I've never seen it successfully handed to

You didn't mention where link building fits, but according to SEOMoz's big survey, it's 66% of what drives rankings. I've never seen it successfully handed to Marketing or PR (well, except at Mint.com perhaps, but Noah Kagan is an SEO masquerading as a marketer), but I'm curious where you think it belongs?