You're not going to be fined unless the discrimination is something really blatant - like screaming at a minority that you'd never take "their kind."  

Oh, will your insurance pay should a visitor get bitten by that dog!!!

If they sounded drunk or crazy or were screaming at their kids or calling me from a loud party, I made a note in a notebook as to why they were denied, and I didn't call them back.When I was ready, I'd sit down with my notebook and call them back in order received.  

And the ex will be around having screaming arguments and drama.And, if you do take a chance on any of these types of tenants, just do month to month rental agreements, in case they turn out to not be so cute, once they are your tenants :-)

And then, Baby-Daddy moves in and the couple have knock down, drag out, screaming, violent fights, with the police showing up and multiple other tenants complainingSo, did the co-signer make sure the rent was paid on time?  

Now we just have to try and keep the visitors from coming back at night.

When I asked about her (we thought she was over 18), because male tenant said "we are thinking of having her stay with us for the summer" (violation of lease which says visitors can stay 7 days), the female tenant replied "he misled you, sister visits for help with homework, she spends the night sometimes".  

This tenants screams IDIOT and TROUBLE to me.

Often the ex comes around and there are screaming fights, and they almost always move out within months to move back in with the ex. 

Same lease as everyone else--how many visitors, how many nights a month, etc.