1. It is the KING of Social Media
2. It has the least advertising cost in the Social Media Space
3. It integrates well with your website 
4. You can sell your Products / Services for free via Market Place.
5. You have the power to communicate directly with your customers.
6. User Friendly
7. Huge Market = Huge Opportunity
8. You can make a group for your clients or fans

Like superheroes (not unless you are One Punch Man or Goku), Facebook has its own weaknesses.

• Because billions of people are using Facebook it is a Goldmine for Business Owners like you. So Millions of Businesses are snatching the attention of your potential customers.
• Information nowadays can pop out from nowhere in the blink of an eye, unsatisfied customers can bash your brand publicly and can tag along people with them to support their argument.
• Billions of people, Millions of fake accounts! You've been warned!

Facebook upgrades its system, algorithm and interface every month, so how to get an advantage to your competitors? 

• Create Engaging Content, use the edu-taiment (educational + entertainment) technique. 
• Join Facebook Groups and engage with your page or you personally (or your VA)
• Use chatbots to answer some inquiries while you are away
• Use the power of hyper targetting in Facebook Ads
• If you have a website make it super-hyper targetting and retargetting by using Facebook Pixel
• Always make sure to communicate with your community or customers