Like others, I've been road testing Superdense and have been very happy with the results. Also like many Sumolings, I do vasts amounts of research on many, many topics so a bookmarking tool like Superdense makes this much easer for me, and also is a great time saver. I did ask the Superdense team a question about ordering categories on the Chrome Extension, they did reply to me promptly and considered my suggestion. That was a positive experience for me and a good indication of the quality of the Superdense team.