Custom themes have been in cydia forever and they are indeed mostly terrible. I would however be shocked to find that Apple was allowing third parties to instal

Custom themes have been in cydia forever and they are indeed mostly terrible. I would however be shocked to find that Apple was allowing third parties to install apps that couldn't be removed like is happening with Android phones on Verizon. I helped a friend update and set up some apps on his brand new Droid X and the first thing he asked was "Why can't I remove the blockbuster and madden apps, I'm never going to use those?" There's something really screwed up about not being able to remove advertisements and useless bloatware from a device that you've just paid $600 for. While Apple has been very controlling, this type of abuse seems to be one thing their control will continue to be able to prevent.