Real Estate Agents and other businesses will not advertise their services nor solicit business in their posts. Create a free business profile by going to
http://www.city-data.com/profiles/add and fill out your forum profile instead. Do not include links to your websites, MLS listings, etc. in your posts. Do not try to push the envelope by attempting to hide your intentions. Do not solicit business by DMs. Show your knowledge about the area and help people and you will get leads naturally. Real estate agents should join the usergroup for them here:
http://www.city-data.com/forum/profi...editusergroups. It will set your user title and add an icon next to your name, so you will get free advertising with your posts.