Facebook created an Olympic hub and an Olympic fan page, both of which are big hits with users: the hub is getting 2,000 "likes" every 15 minutes or so and will get to a couple million in a few weeks. The fan page has 2.8 million people who "like" the page and have opted-in to getting updates from it in their News Feed. But there are no advertisements on either of Facebook's pages. By contrast, Yahoo's sites for events like the Olympics are "tent-pole" pages. Yahoo directs traffic to them from its front page and email accounts, and has big-brand advertising there, too.