There were some lite versions and substitutes before, but nothing beats the real thing. With the dedicated app you can make free Skype-to-Skype calls, do instant messaging, or call phones at low rates, at home and abroad – over WiFi and 3G. The US version supports voice and video calling over Wi-Fi only. If you have a Skype account, your contact list will appear when you sign in on your Android phone. To call abroad, just dial the number in Skype, and use Skype Credit to pay. There is also unlimited subscription based calling with various rates.
Skype can be downloaded from the Android Market, or from skype.com/m on your phone. Some say Skype and the likes can kill voice plans, but we are positive the carriers will make up for it in data charges.