It's Amazing how short sighted most people here are.
Apple has been pathetic lately
Think about it, why would Apple put a front facing camera on the iPad when the experience of using it would be terrible? Think of the form factor of the tablet! One would be so limited by this alone in terms of having to hold the tablet a certain way in order for the person on the other end to always maintain a good view of you. Also it is a tablet so even if you did put it down to rest on lets say..the accessory keyboard you would still have to move yourself to frame properly.
It seems that almost everyone in their haste to start bitching about what the iPad does or does not do, completely over-looked the little 30 pin-USB connector along with the 30 pin-SD card slot version. YOU ALREADY HAVE SOMETHING BETTER THAN A BUILT IN CAMERA, IT'S CALLED THE iPHONE!
When connected to the iPad you will have the best camera for video conferencing, taking photos or pretty much anything else you'd need from a camera, only you have it all rolled into one small, universal device that you can move and position anywhere you like!. My guess is that it's only a matter of time before you don't even need the wire, you'll be able to use them both together in ad-hoc mode over wifi or bluetooth (if it's fast enough).
Why would Apple include a front or rear facing camera in the iPad that would serve as a horrible picture taking experience considering you'd have to hold the iPad out in front of you like a complete idiot? It's about form factor! Also this way it gives people who haven't bought an iPhone more incentive to get one.
Once again, the common mistake is being made here. It's not what Apple gear does or doesn't do...it's HOW IT DOES IT!
~B-R