If you're an Android developer and looking for ideas, start here
androidforums.com
androidforums.com
Looking at this forum is fine, but you still have to go through the effort to integrate all of these disparate and narrow desires into something larger that you can build a business on. That's hard! Staying motivated while working on a problem that you don't have yourself is even harder.
Developers are better off looking at small problems or annoyances in their day-to-day that they can solve using the Android (or any phone in fact).
A better approach is to consider how ubiquitous tablet/mobile almost-always-networked touch/voice-based computing is going to allow better HCI in what general spaces, cross-reference with a comprehensive list of industrial practices, see how those can improve, and team up with domain experts to identify common needs and start building libraries, back ends, and apps.
There are already too many to-do lists, casual games, and social apps. It's time to make industry more efficient.
EDIT: Or NewGrounds or Download.com / games
Yes , it does work on my Google Ion.
I found a forum thread where someone found a sequence of interactions that work around the problem, but select/copy/paste really should be in the app's menu, like they are for the browser:
http://www.google.com/support/forum/p/Google%20Mobile/thread...
Summary: You can use Shift-S to activate select mode, then use the scroll ball to select. (On a keyboardless phone, hold "menu" until the soft keyboard comes up, then press Shift-S to activate select mode.)