I am looking to free lease out my riding gelding this year - because I am expecting and he won't get used at all sitting here. He may as well go to someone who can get some use out of him, rather than have him just sit, and I won't have the feeding expense, hoof trim expense, etc in the meantime.
I'm not advertising him, though, would only want him to go to someone I trust or someone that I trust, trusts (and then I'll still do some serious screening and have a contract).
I free leased a mini gelding to a friend for about a year. I had "extra" horses, she wanted a little guy around for her niece, it was a win/win. I knew he was safe and being loved on with friends, getting more attention than he would have here, it worked out really well.