The most well-known in the world social network is probably Facebook. In 2005-2007 some countries started to create it own social networks. My country's most well-known social network is vk.com, it was created by Pavel Durov and his team 8 years ago. The average amount of users is more than 150,000,000 and the amount of messages sent daily is around one billion.
Does your country host it own social network? If yes, what is it called?

 

I really don't know.

 

The US has it's own social network!
It's called the government
And you have to pay taxes to join
(oh and if you don't join you get in big trouble)