Hi Cary,
As a relative newcomer here as well, it's interesting reading.
As far as FLSDirect.com go, I would agree it looks OK, if it's free to list, two things spring to mind, first is lead capture or secondly selling advertising space. Plus looks like you would have to post each listing manually.
A site that might interest you would be Point2 Agent. (i am biased I have one)Free to start apart from domain name. This site/your domain can list free in about 17 websites automatically (these include Google Base, Yahoo, Trulia, Zillow etc.)
http://www.alltaosrealestate.com/ForAgents.aspx This link will show you abit about it, if you have any questions ask Jim.
Point2 Agent is available elsewhere I just owe Jim a referal.
I have only just started with my website, feel free to have a look
http://www.langstoneteam.com I have now subscribed to the Pro level but you can see what is possible.
Any questions send to Jim Kimmons, you will find on this forum somewhere.
Regards
Alan