If they have not, many landlords will give bad references and it will backfire on the tenant.

Most of these scammers are overseas and not English speakers, and you can tell by their grammar and word usage, or they use very short sentences so they don't have to say much.

Hi Vincent, there is a significant difference in true Hard Money and rehab loans, rehab loans won’t be low doc by any means.Hard money should be fairly simple & quick to fund, it’s strictly equity based.How bad is the condition of the property?

As with any professions, real estate agents included, there are good and bad.

It's like Whack-A-Mole: don't think about bad things happening until they do, then panic and run to BiggerPockets forum for advice.

This video is a great start and includes a lot of sample images (good and bad).

I've seen a few hundred dollars for lease renewals versus they may charge a month's rent to find a tenant and you are reducing the risk of having a bad tenant with the turnover.

A bad cleaner that is not paid well would tank your revenue so I think it's a blessing to have a well-paid and amazing cleaning team. 

Good/bad ?

Are there specific reasons you don't want to rent them out (e.g. bad previous experience with a tenant)?