First and foremost, it is vitally important to understand what a property can be used for, and what the highest and best use of the property is. With a simple phone call to your local planning & zoning department, most offices can give you the answer to this question in a matter of seconds. Once you know the zoning classification (e.g. – residential, mixed-use, commercial, industrial, agricultural, etc.), ask them to give you some examples of what type of property would be allowed under each of these particular zoning classifications. They may even give you some ideas that you hadn't previously thought of. Once you understand the most ideal use of the property – you can quickly determine whether it will fit your needs (or the needs of those you intend to market the property to).
FindMyRoof does a pretty decent job of putting together a nice listing that gives all the basic details in an easy-to-follow format. It's not a terribly complex process to create a listing, and the site doesn't draw in a huge amount of traffic – but it is a relatively targeted audience of real estate buyers, which may make the site worth your time and consideration.
Market for Land is Less Active – The market for existing homes is almost always more vibrant than the land market. There simply are fewer numbers of buyers for vacant land than consumers looking for homes. Start marketing a new home listing and a new lot listing when both are desirable and priced well, and you generally can expect fewer contacts about the new lot listing.