Seth, I can definitely see how internet marketing would be extremely useful when selling your property. My wife and I have been planning on selling our house in order to move to a much more family friendly neighborhood. I think that we should consider finding finding a real estate agent that could help us to sell it exactly according to our desired asking price.
Once we have completed our title examination and have established that there is clear title to the property, we will coordinate with you to set up closing. A title professional will prepare the necessary documents for you to sign, notarize, and return to them. Once the signed and notarized documents are received, the agreed upon funds are distributed and you get paid! Our process is simple, straightforward, and typically takes about 2-4 weeks to complete.
You can also look to certain companies and organizations that have a concentration of people that may fall in the above mentioned roles such as investment companies (i.e. Charles Schwab, Fidelity), financial advising companies (i.e. Morgan Stanley, Merrill Lynch). There may be a higher concentration of people who can both afford and want to build their own custom homes or to build income-producing properties. Try linking yourself to financial advisors who may already know of people who have these types of dreams. This isn't a comprehensive answer of all the possibilities but just some thoughts. Good luck!
There are hundreds of millions of people passing through this site each month (with many of them coming from syndicated outlets like AOL, Yahoo, Trulia and more) and most of them are there with the sole purpose of looking for real estate to buy and rent. It's also worth noting that many buyers start their search with Zillow (instead of looking only at their local MLS listings), so it's a great way to gain exposure to a massive (and targeted) audience at no cost.
Hotpads is a unique one on this list, because it's only intended for listing properties (houses, apartments, condos, etc) for rent, not for sale. Nevertheless, this still fills a major need for many property owners, and since it's one of the bigger players in the space, with a very well-designed layout and interface, it's definitely worth mentioning on this list.