Interactivity, the size of the QT plugin - it was huge to download it in the 56k days, the downsizing of the Macromedia Shockwave plugin - which was half as small and getting smaller, among other reasons, Quicktime while great, the QTVR and other things were quite bloated and larger than other offerings at the time. It's still about 10mb for a download - which is nothing now with our broadband speeds - but it's still bigger than Flash which is at 1.8mb or so for the MS IE install. LiveStage... wow. That's taking me way back.