What if a tenant accidentally starts a fire that spreads and causes damage to other homes in the surrounding neighborhood?

Keep them in a spread sheet with the company name and phone numbers.

This is both a plus for WL (the investment returns are normally a lot less risky) and a minus (you need to pay fees so this whole well you will make the spread plus a hefty return is not even close to certain). 

@Casey HamptonI keep seeing a guy named Tom Cruz (not the actor Tom Cruise LOL) popping up on social media promoting his Section 8 course.

He buys social media engagement to push his products.

You will get a deal with enough marketing but you might not get there if you are spread thin without luck (positive side of variance).  

Has to have a spread to make it work.

You need to have the property marketed everywhere possible including the MLS, social media, and the other 50 websites you are neglecting, Zillow and Apartments are the only place tenants look.

Some ideas: posting on forums; reach out to your network; college campuses; business relocation sites; and yes, social media :) Use a good screening procedure to weed out unqualified applicants.

Any kind of remote work would be an option: Virtual assisting, social media management, website design, etc.