How can I make scroll bars always visible? Android hides scroll bars unless the window is actively being scrolled.  This makes it hard to tell if a window can be scrolled without actually trying it.  Is there a way to force Android to always show scroll bars when there is something to scroll?

I have a Thunderbolt running Android 2.2 (Froyo).
When an activity that can be scrolled opened, the scroll bar should show for a few seconds before fading, therefore you can will know that the page can be scrolled. If you missed the subtle hint, then just slightly swipe the screen to display the scroll bar.

IMO, it wouldn't be a good idea to always display the scroll bar, as the scrollbar is in the content area and may obscure whatever is in the screen.