With more than three million Apple iPhones expected in consumers’ hands by the end of 2007, Voice 2.0 company Talkster is delivering an special holiday gift to Apple iPhone users: simplified group conference calling all over the globe for the cost of a single local call. Although the intuitive Apple iPhone comes with a simple method for adding additional people into an existing conversation, the process becomes tedious and complex when adding a third, fourth or fifth caller to the conference.