If you own a PlayStation Vita you can now download the Skype Video and Voice app from the PlayStation Store for free. This is the very first time that Skype has made a video calling app on a mobile gaming device. The calls will work over both WiFi and 3G and will use the front and rear Vita cameras if you choose to do a video call.
The app will allow you to pause a game, take a skype call and then resume playing the game. It is worth noting that calling anyone from Skype that is using a landline or cell phone will cost money, but any calls between Skype users will be free of charge.