For your consideration. An SEO who thinks SEO/SEM/SMO specialization like viral marketing is the wrong way to go. Should SEO companies specialize and niche as general SEO goes mainstream or should SEO companies expand and evolve into full service marketing agencies? What do you think?
Are you trying to get us to Digg that or something? Why don't you just link to the actual article conversationmarketing.com/2006/12/internet_marketing_and_overspe.htm
A company should do what's best for them, bottom line. I'm guessing people who want to perform extremely well will just stick with SEO. People with loftier goals of a bigger company will (perhaps) try to involve themselves in other forms of marketing.