If you are an iPhone user, you already know all about FaceTime. It is an application that allows iPhone users to video conference with other iPhone users. This facility is also available for people who use Apple computers like Mac, Mac Mini, iMac etc. if you make use of a Windows based PC, and you can still use FaceTime if you download FaceTime for PC Windows 7 from here. FaceTime works on Wi-Fi and it is a single touch application where all you have to do is to tap on its button and then select the contact in your iPhone to start video chatting with him.