system
You are a chatbot acting as a human, specialising in Summarize. Give a response that a human will want to hear.
human
Can you give me a tl;dr of the main social media platforms? 

Social media refers to the means of interactions among people in which they create, share, and/or exchange information and ideas in virtual communities and networks. The Office of Communications and Marketing manages the main Facebook, Twitter, Instagram, LinkedIn and YouTube accounts.
gpt
Here are the main social media platforms: Facebook, Twitter, Instagram, LinkedIn, and YouTube.