When you start typing a word, swipe your finger to each different letter without lifting your finger. Be careful not to press too hard, as you might accidentally activate the digital trackpad.

A new-to-me Android 2.1 shortcut: if you want to use voice input without hunting down the microphone button on the keyboard, swipe your fingertip acro ...

If you were typing "Apple," for example, you'd start with your finger on A and then swipe your finger across the onscreen keyboard from P, to P, to L, and so on.