Then after your pumped up, which they bring in professionals to do, they say all will be revealed after you sign up. 

Why kill yourself bugging tenants to reveal their financial data? 

In the two cases that I experienced shocking and insulting conditions it was revealed in one case that the management company owner had never visited the cabin and in the second case the management company owner laid blame with the house keeper for not informing them of the condition of the duct taped, pleather sofas.

Most of the time people who are scamming the system will not pursue a Fair Housing complaint to reveal what your criteria is.

Another lesson learned from this experience is to list some specific conditions in my lease, like that pest control is the tenant's responsibility if it's not HOA-related and that service calls for issues that are revealed to be the tenant's fault will be charged to the tenant's account.  

I can go find multiple houses that will look like a 20% return on a spreadsheet but, an in person walk through will reveal old non functioning windows, a decaying roof, lead paint, asbestos tile, and a high risk area for tenants.Add all of that together and you will get your 20% returns for a month or two, or maybe a year but, the balance will come due eventually and when it does, you may be stuck with an asset that has no exit plan. 

So many times I see landlords inadvertently revealing clearly private information about those they rent to or deny rentals.How freely can I speak here? 

Makes no sense for a utility district to have mysterious charges that aren't revealed until you have already purchased a property. 

I had a tenant that we end up evicting in June this year and it turns out a simple court search of the tenant by myself reveals that the tenant had past eviction, collection, and judgment that got to the point of creditors and landlord had to file legal proceddings in court. 

Please help~ I shouldn't reveal this publicly but here is what you do:1) Go to probate court clerk2) Ask where they sell the probate leads list.