As is obvious from the post, Fred meant a list services that are used to publish lists for others to consume. Lists like the MacRumours' Buyer's code mentioned

As is obvious from the post, Fred meant a list services that are used to publish lists for others to consume. Lists like the MacRumours' Buyer's code mentioned in the top comment. http://buyersguide.macrumors.com/ http://buyersguide.macrumors.com/ There's an obvious network effect: producers and consumers, more of each makes the service better, if producers get something as a return, even if it is just silly internet karma points.