David Sacks, the founder and CEO of Geni, wrote an interesting post for TechCrunch today titled The New Portals: It’s the Bread, Not the Peanut Butter. David writes about the evolution of the "Portal" site and theorizes that Facebook and sites like it, where your social network provides you with relevant information, are the next step in the evolution of the "Portal" site. Interesting theory.
For the last several years, Yahoo, MSN and AOL have all suffered a declining share of pageviews, but that does not mean the portal is going out of style. Rather it has been redefined, first by Google, and now by Facebook in potentially even more profound ways.