Do you remember the photos of a T-Mobile-branded iPhone BGR published a few months ago? The device was believed to be an internal Apple test unit for a couple of reasons, one of them being the custom "Confidential and Proprietary" text on the lock screen.
Well now, jailbreakers can add custom text to their lockscreens too, thanks to Internalizer. Chpwn's latest TweakWeek entry allows you to place text on your lockscreen to use as a reminder or display contact info in case your device is lost...