I ran across some great slides assembled by Rand of SEOMoz. He has put together some nice data, lists, and useful insights about SEO and the likely growth of organic (substantive) growth through social networks, word of mouth, etc. Everything old is new again!
View more presentations from Rand Fishkin
Also, ran across his blog - http://randfishkin.com/blog/128/misadventures-venture-capital-funding – which is a really nice read of their ups and downs and the marathon that is their venture.