is there any legal issues with posting a currently listed home for sale on your website or publication that you dont have anything to do with...with hope that you can find a buyer for the home. then go to the realtor representing that home and work out a deal?
I think that in order to advertise Real Estate that you don't own, you'll find that you are required to be licensed.
That's the whole reason why the Licensing laws were created; and doing so without a License is a criminal offense in most jurisdictions.
Some shysters, doing what you propose, will enter into a Contract to buy the property for themselves (as a straw man), and then sell their "rights" in that Contract to another party (Buyer), hoping to profit from the spread, and thereby circumventing the Law. So, you could take a chance, and defy the intent of the law; but that is always a mite risky.