On all my sites, I end up having a customization that makes the listing Title field non-editable. This means that the user/member can create the listing Title, but then they cannot edit it. If they need the Title changed, for whatever reason, they contact our support.
Why do this? Enabling the user to edit the Title means that they can effectively change the entire listing from one product (ie property, car, boat, etc) to another, and "recycle" their listing. If your site charges for listings and packages, this can result in lost sales.
In my case, it's the Title field, but you may want make another field non-editable to make the customer contact you for assistance and create an opportunity to upsell or cross sell them on something.
It would be nice to have an option in the admin for Listing Fields to make fields editable (or non-editable). In fact, 2 other classifieds platforms offer this feature.
Thank you
Ron