1. Facebook is a social networking service website in the United States. Founded on February 4, 2004, it is headquartered in Paraatu, California, USA. On March 6, 20 12, the Windows desktop chat software Facebook Messenger was released.
2. Twitter (the unofficial Chinese name of Twitter) is an American social network and Weibo service website, and it is one of the top ten most visited websites in the world. It is a typical application of Weibo. It allows users to update messages with no more than 140 characters, also known as "Tweet".
3.LinkedIn is the largest professional social networking site in the world, and it is a social network (SNS) for business customers. It was established in February 2002 and started in 2003. It was listed in the United States on May 20, 20 1 1, and its headquarters is located in Mountain View, California, USA.
The three recommended above are the most used in the world, and there are some others, such as linkedln Pinterest VK and google plus+. These are social networking sites with tens of millions of users, and they are good places to make foreign friends.