Yes
No
Yes you can you can use the inbuilt FaceTime program or you can download such apps like Skype.
with the new 3.0 software update it is expected to be possible
Yes. FaceTime and many third-party apps can do this.
While the new iPhone is good for video conferencing, you still will need to be in a good location with minimal interference. I wouldn't totally rely on that if you have a very important meeting just in case.
You can turn off the iphone data plan. Simply get another phone and call at&t and tel them you dont want the iphone anymore they will ask you for the ESN of the new phone and you are done. I know that when you get the iphone they say "your signing a contract to keep the iphone plan for the life of the iphone" but they dont make you as long as you have a new phone that line will be associated with
Yes - ehow.com gives you detailed steps on how to make a conference call: http://www.ehow.com/how_2125138_use-iphone-conference-calls.html You can merge up to five calls at a time on the new iPhone.
The exact release date is 17th June 2009. To find out more go to apple.com/iPhone and you'll see info about iPhone OS 3.0 and the new iPhone 3G S. Which is the new iPhone with voice recognition and video recording.
There is a Commcenter patch for iOS 5+ available for the iPhone 5, iPhone 4S and iPhone 4. This makes it possible for the user to edit the carrier.plist.
Yes, it is possible to get an iPhone for free. Many cell phone providers will give you a free iPhone if you sign up for a new two-year contract.
Apple is usually very good about keeping secrets, so I'm not sure about a new iPhone for 2009, but it's very possible.
As you probably already know the new iPhone OS just came out. The reason why it is so popular is because it is the first phone to be capable of making a video call any where you want if you have wifi. Also Apple is a very popular company