Very true about Skype it is very good But as the big issue skype had just before xmas demonstrated. The way the system works which is peer to peer ie peopls infomation and your sis passed round a series of other peoples pc's to get to the destination. Can mean that some pc's can be used as supernodes and also even if your not using Skype ie chatting or video camming. Watch your data I believe you can change settings to adjust. But be careful of simply leaving skype on all the time if you need to be careful with your data consumption.