... we are in a ping server war. It's a little hard to see, but the ping server will become the new center of the net. Verisign's acquisition of Weblogs.com was the first salvo. I'm not sure Robert Cringley is right about Google-Mart, but he isn't entirely wrong. Google Base isn't just about volunteered structuring of data, but pushing pings ... The important point is there is tremendous value being the first to have information pass through your central node.
Ross Mayfield's Weblog: The Ping War