Are either of these even semantic products? I didn't realize parsing the body of an email itinerary and sharing it with your friends was all that was required to be in this category. This list should be renamed "websites I like in 2008!"
To be honest, the only reason that Directed Edge isn't branded as a semantic tool, which many others have labeled us as, is that I vetoed the suggestion from our business guys since we're not using any properly semantic techniques.