Skype has just released the gold version of Skype 4.0 for Windows. For those of you who may not know yet. Skype is a way people communicate around the world. Skype has more than 405 million registered users globally who use Skype software to communicate for free through voice and video calls as well as instant messages. Skype generates revenue through its premium offerings, such as calls made to and from landlines and mobiles, voicemail, call forwarding, and SMS. Conversations over Skype can take place on computers, mobile devices and Skype Certified™ hardware.