But there's a price to pay in the smoothness of the user interface. Here are a few examples of things you can't really do well in a web application: Create a f

But there's a price to pay in the smoothness of the user interface. Here are a few examples of things you can't really do well in a web application: Create a fast drawing program Build a real-time spell checker with wavy red underlines Warn users that they are going to lose their work if they hit the close box of the browser Update a small part of the display based on a change that the user makes without a full roundtrip to the server Create a fast keyboard-driven interface that doesn't require the mouse Let people continue working when they are not connected to the Internet These are not all big issues. Some of them will be solved very soon by witty Javascript developers. What's left on this list today?