Fring has unveiled its native iPad app that is fully optimized to make use of the extra real estate, plus some extra features. The main feature is the ability to use VOIP (Voice Over Internet Protocol) and group video calling. So, yes the Fring does make use of the front camera.
You can do video calling with up to 3 other Fring users. Another useful feature is the ability to do both voice and text chats simultaneously. There are several connectivity improvements as well and myriad of bug fixes to make the application even better than the iPhone-only version that we iPad users were forced to use. You can download it for free from here.
Keep on eye Skype for iPad as well.