How do property managers or LL shoot themselves in the foot?

[Account Closed]

On Zillow, in the Price/Tax History section, it seems like most homes in my neighborhood are listed for rent for about 4-6 weeks then disappear for about a year before they are listed again. That seems reasonable (though I'd love to see them gone for longer than one year.)

However, some of the listings of outwardly comparable properties in the same neighborhood list for two months or more, drop off the list for a month or two and then come back to list for three more months only to finally be picked up.

I assume that the property manager or landlord are doing something to sour the deal. Any thoughts on this?

Thank you for any replies.