Everybody knows such telephony services as Skype an Viber. May be You are using these services to make calls.
Now there will be project of internet telephony based on blockchain technology.
On 27th of July 2017 12:00 GMT time starts very interesting ICO. Link of project is here https://ziber.io/
How You can earn? If you are owner of Bitcoin and Ethereum wallet you can get bonus tokens of that project absolutely for free.
If You are Windows XP to Windows 10 user You can download software from their page here https://ziber.io/Ziber.exe
If You are Linux user You can run this application under "Wine" and it works.
Interface of installed program looks like visible on picture below.
When ICO will end there will be available mobile aplication for Android and iOS phones. If you will run software on Your phone which supports functionality of system You will get comissions.
ZIBER wants to compete with such grands as Skype and Viber because of lower call expenses.
Make international calls to mobiles absolutely without charges till ICO ends.
Have good conversations!