I stumbled on this thread tonight. I notice that GSMLS 2669920 is still active here on August 17, 2009 and listed with the notation this is a "Limited Service " broker from Hackensack, quiet a long distance from Caldwell so service would be naturally limited compared to a local broker and agent. I think Sloan the first Answerer was correct on all counts. My own broker is working with Trulia to have all its listings on the site. I believe it is up to the individual agent to manage the Open House schedule and posts, just as it would be on the MLS.
Lesson learned: always use a full service agent who knows how to market homes in today's environment, including Trulia, Zillow, Realtor,com and more.
As in most things, and as Popeye said, 'Yuz gets what ya' pays for."
I will apply my own expertise and see what your home will sell for today to a well qualified buyer.