For me, the best social network is YouTube. To be honest, with its help you can make good money and even watch very cool videos. So have a lot of fun.
I believe that it is exactly YouTube that has a very great social significance in communicating people from all over the world. It is thanks to different channels on YouTube that we have a modem to look at how people live in other parts of the world.
I also watch Youtube. But not for entertainment, but for different interesting information. I agree that thanks to some videos you can find a lot of money making money on the Internet