There are two large categories of apps that don't have the same degree of raison d'etre on the iPad. You've hit on one, which is that having a larger browser an

There are two large categories of apps that don't have the same degree of raison d'etre on the iPad. You've hit on one, which is that having a larger browser and a faster processor makes having a "native interface for a web app"-type app less important. There is no Facebook desktop app to the best of my knowledge (one made by Facebook, anyway). The other category of apps that don't make sense on the iPad are the "small utility that you always want to have in your pocket" apps. The iPad isn't small, and you don't carry it everywhere the way that you do an iPhone or iPod Touch. Two examples that look a little ridiculous when scaled up to iPad size are a compass and a calculator. The situation isn't likely to get much better until a big chunk of laptop users start adopting iPads as their primary portables. At that point I could see a lot of web apps start to make native-code interfaces. In fact it might get worse once iPhone-4-optimized apps can be run full screen on the iPad complete with non-pixellated graphics and text. So that leaves productivity apps, games, and a few miscellaneous categories.