In my country using viber and whatsapp are more common than skype....how a bout your country?in my idea viber is the best.....what a bout you....
in Indonesia, Line and whatsapp are very popular. people are not mention their skype while talking but their line id :)
WhatsApp for texting and Skype for videocalls.
Thanks dear venus and carlos for your response
Here in Brazil we just use whatsapp and sometimes we use skype
i have many! i have viber,wechat,whatsapp,facebook,skype & QQ