Skype vs Viber

Millions of people communicate on-line everyday.
What do you usualy use?
Today we have many tools for this. Skype and Viber are probable the most popular among them.
What is more popular today Skype or Viber?
Let’s ask Google.

Look at the situatuon in the Middle East:

Since Viber and Skype were blocked in UAE their popularity decreased. But using vpn you can easity use both services.

The situation is similar in Saudi Arabia.