The iPhoneIslam team, which has previously authored FaceIt3GS, has come up with a new hack which will blow your mind: full calling and SMS support on the 3G iPad.
iPad 3G, by default, allow internet connection and other services via 3G, but not calls or SMS. Thats quite a letdown, since the device has the capability to send calls. Of course you could get Skype, but good luck getting everyone in your list to get a Skype ID.
Thankfully, those days seem to be over. On a blurry video posted on YouTube, an iPhone jailbreak tweak will soon unlock calling and SMS capabilities on your iPad.