The Chronic Dev team has released a new tool that collects crash reports from iOS devices, which can be used to find vulnerabilities for future jailbreaks. This is similar to what Apple uses to find possible holes when an app crashes, and this tool will disable sending the crash report to Apple. All you have to do is plug-in your iDevice and hit a button.
Using this agglomeration of your crash reports and our ninja skills, Chronic Dev will be able to quickly pinpoint vulnerabilities in various programs by using the same techniques Apple currently employs. At the very least, your data will help point us in the direction of which applications are the most vulnerable, so we can focus our time & energy on these with laser-like intensity. And, of course, this will also prevent Apple from accessing all your valuable data, just so they can then turn around and use it against you.
If you want to do you part to help the jailbreak developers, hit the source. A beta for Mac is currently available, and a Windows build should be available shortly.