'Skype'

I write about a technology of Internet. It is 'Skype'. I think that it is a kind of telephone system which used Internet. My friend told me that and I bought headphones with a mike, but I have never used it to talk to him. I made a call to the test station in England where I can listen to what I said as a test. I found that it was useful because it did not cost any money except electric bill, but it is unuseful because there is no guarantee of talking to the person at any time.
However, I was surprised the member of Skype. The system is used by all over the world, so many foreigners also use it. User can use the search system to find a tele-pal on the Skype, but I think it is not safe but a little dangerous.[146 words]