Normally speaking, skype is less common used in China. Even i have studied in the Netheralnds and UK for the past few years. In fact, we prefer using QQ. Below link can access to its international version: http://www.imqq.com/ Hope u will like it as we did. It ranks 1st among all kinds of communication software in China. No doubt that you will get known by a lot of Chinese by using it in a few days. Lucky!
--Suggestion from David to a Chinese learner.