Jailbreakers out there should already know pretty well that when you're updating to new iOS firmware, you're kissing your jailbreak goodbye. Now, thanks to Saurik, Cydia's newest feature lets you re-download those apps without a problem.
With this Cydia update comes "Manage Account." This feature lets you keep track of your packages and app purchases through a Google or Facebook account, and also saves you the time of hunting packages down in the repos or re-buying your paid apps after an update. [Redmond Pie]