Reference

Information source:

https://www.weibo.com/us?display=0&retcode=6102 This is a Chinese website and app that user can post anything they want. It also can post images and add friends to follow their posts.

Instagram: A app that user only can post images about their life. It contains follow friends, add comments to the image and put some short videos.

Facebook: A app that user can post images or words. It also contains follow friends, invite friends to events and send messages..