Virtual currencies on the Internet, such as BTC and LTC, are electronic money generated by open source P2P software. Some people translate bitcoin as "bitkin" Network virtual currency. Mainly used for Internet financial investment, but also as a new currency can be used directly in life.
Yes bitcoin and all its altcoin can be consider as the virtual currency. In fact in modern time the user of virtual currency is now increasing from time to time, because of the increasing interest of the people. I think that their interest will continue increasing for a long time.