Here is a new site to advertise your properties. 

http://realestatesalesite.com/listings 

The accounts are free, and they are lining up to syndicate out to all the major real estate portals like hotpads, trulia, vast, google base, yahoo, zillow.  Just sign up for an account, click on the add free credits for 100 property postings. 

I had fantastic hits to my properties right away.