We rarely invest in rental properties because they belong to someone else. At anytime the landlord could refuse to renew the contract or jack the rent up too high to justify staying. The same goes with Facebook, Twitter, Instagram and other social media platforms. At any time they could close up, remove your content, or start charging too much.
If something were to happen, would you lose your work?
Don’t build your house on rented land. Add content directly to your website and use social media solely to drive people to it.