Cash flowing a short sale during negotiation?

[Corry Taie]

Anyone ever heard of this? I do short sales & someone I recently met cash flows the properties while they are negotiating with the bank. They do a month to month lease or rental on the property during the negtiation proccess. Anyone done this? Seems like you could make $$ while you are waiting to get the deal done, but what are the implications?? Not sure how it works. Just curious.