When I was looking at third party libraries for Android the other day (check out this link to find some interesting libraries; they may make your life easier), I stumbled across a pretty nice library for getting crash reports from your applications when they are out in the field.
ACRA generates all of the crash information you need--from device specs to log cat output during the crash. It uploads all of this info to a specified Google Doc Form. It even allows the user to input a simple message to the crash report before it gets sent out.
This tool is great for small testing groups. It allows you to grab all the info you need about a crash without trying to pry it out of your testers. But ACRA doesn’t scale very well, though. More than a handful of testers sending crash reports this way would become pretty difficult to sort and find the information if needed quickly.