@6011_3531_5354 

yes its free to post ads in PropSocial, and it will stay there forever, until the owner of the ads remove it. 

@domng yes, the reason being is if the house you want to sell/rent is still vacant, you dont have to find new pictures to post again as another post.

@domng Yes there is a way, simply put your mouse courser to the profile picture. It will indicate whether he is an agent or the owner. For example your profile is registered as a user. And @windzneom 's profile is registered as an agent. Therefore, in windz neom's profile you will see "view my details". And when u clicked in, you will see the REN number as well.