I'm new to PB. Half the time when wanting to scroll up or down, I inadvertantly open a new window. This is because of all the links and ads on the sides, especially the right side, and touching them does that.
I also blame the small screen size of the PB for this problem. It would be nice if you didn't have to touch the visible screen, but could scroll using the outside sections of the display. Very frustrating, or else I just don't have the touch technique down.
I also open links inadvertently. The suggestion is to touch and slide, a touch, like a quick flick seems to open the links.
You can use the bezel for scrolling it you start scrolling in the main window and then slide over to the bezel and continue in your direction. One fluid move.
I have the same issue, small screen fat clumsy fingers. From what I have gathered the bezel is just a threshold, not a full sensor across the whole bezzel, why we cannot simply have a vertical scroll in that manner. What I find works best for me is to slide my finger on the edge of the screen and bezel. I find it works best by not trying to be too pricise (very tip of a finger), as long as the ads/links are not right on the edge it works nicely for me.