TrackBack links are not meant to be viewed in the browser. They are only used for blog-to-blog linking. Matt has some notes about this, which could arguably be called a flaw in the design of TrackBack. PingBack is more intuitive, since it doesn't require any special setup or interaction, but doesn't have the capability to carry excerpt information, by default. It would be nice if there was an easily implemented protocol that could combine the best features of both systems.