Your perception of the reason why banks call loans due has been discussed here on BP at length, there are loan servicing contractual obligations as well as regulatory matters that influence a bank or note holder to call a loan due much more than any reasoning of it being paid or performing or the common misconception of interest being earned. 

The first misconception is that these people sell real estate information.

In this new world of CFPB oversight, you really want to be careful when messing with federal regulations.Finally, having spoken to investors who have used those leads, it seems their results are worse then those who start later in the process (at nod, or even nts) - even when they don't follow the rules.There is a common misconception that being first to talk to an owner is best.

The two largest misconceptions newbies have are rooted into capital demands and time.  

Maybe you have a mis-conception about property managers - half of the time when I walk into an office of a local PM, the staff is barley able to order a beer on their own.

That's a common misconception so I figure I'd point that out.  

The idea that most of Pinellas and Hillsborough counties are in flood zones is a misconception.

Definitely no misconceptions around ease or difficulty level when managing low-income tenants.

It's a common misconception and confusion.

There is a misconception that if you form an entity, any entity, you place your property in it, voila, you're totally off the hook.