And the answers to them, posted here and there by senior Android engineers.
How much memory is my app using?
Over at Stack Overflow, our own Dianne Hackborn takes this up in detail. There's no simple answer, but Dianne does offer lots of useful information.
How do I make a ScrollView behave?
This one does have a simple answer, and our Romain Guy offers it in ScrollView’s handy trick. It's easy enough to do once you know how, which is harder to find out than you might think, because there's one useful XML attribute that's there in the examples but missing in the docs. Oops!