If the "landlord" can prove trespassing or if the "tenant" has an outstanding warrant or gets violent in the "eviction" the police can get involved. 

If an agent presents me with an outstanding opportunity, I'll pay their fee.If I was selling a house and you came in and said "I'd like to buy your house and I'm a real estate agent" I'd immediately believe my house is worth more than you are offering.

In Georgia the notice states "Said property will be sold subject to (a) any outstanding ad valorem taxes (including taxes which are a lien, but not yet due and payable), (b) any matters which might be disclosed by an accurate survey and inspection of the property, and (c) all matters of record superior to the Security Deed first set out above, including, but not limited to, assessments, liens, encumbrances, zoning ordinances, easements, restrictions, covenants, etc.

That way, you will know what kind of loans they have outstanding and whether they have been sued.

If my guess is accurate, that's outstanding!  

That’s okay, you’ll find out later about any outstanding liens or judgments when you get a title report.

Many users on this site believe CA has poor cash flow, but for long holds it historically has outstanding cash flow (if value is not extracted). 

The outstanding balance is added at the end of the loan as a zero percent loan attaching a subordinate lien on the property.

This diminishes the return and I expect outstanding return for residential RE (typically I have achieved the infinite return via value add/refi). 

If the underlying mortgage remains outstanding past 1 year, then I would be obligated to fund for another year, and so on.