I used Zillow to list my rental and accepted someone's application however after my few interactions with them on the phone some major red flags have come up and I wanted to know am I under any legal obligation to rent my property to this person. 

Hi Miguelli,If you’re not depending on rental income for immediate needs and are focused on long-term growth, prioritizing appreciation and accepting some short-term cash flow challenges could be a smart strategy.

My rules are legally accepted and their IP address recorded so I don't do any lease signing.

And getting kicked out of Australia is pretty hardcore I heard he’s no longer allowed back in Croatia after the incident at ClimaxX Nightclub God Bless America 🇺🇸The only country that allows me to stay and has accepted me as it's own haha12+ years here and still no misdemeanor.I'm not doing something right haha

He wanted the appraisal to be high for a loan.The county had a much higher valuation.He went with the appraisal and his charm.They accepted the appraised value and adjusted the tax bill.

I do recommend you stop accepting made-up excuses like family emergencies, car repairs, or whatever.

They tell you upfront what they can get before you accept their service. 

Just to bolster one's own credibility, offer to accept a portion of the newbie's first deal profits as a show of good faith.

BUT, when you “accept” business that has low profitability, takes an inordinate amount of time, is outside your area of expertise, or does not add to your reputation for expertise, you’re replacing highly profitable business that does add to your reputation as an expert and leads to more profitable business.

Who cares if none get accepted.