I have configured Opera so I can page up/down with it. I would want to have that working with every appliction (e.g. PDF reader). Reasons? 1) That's what I'm used to from e.g. Palm PDAs with 5-way navigator pads (they work very intelligently there). 2) I prefer to avoid touching the screen with my fingers as much as possible. It gets full of fingerprints, and I _hate_ that. I use a nail now and then, but mostly the stylus.