A common request from agents on Trulia.com is to change the linked web site for their listings, so the listing points to their own web sites. When we receive multiple listing submissions for a property, we aggregate the listings together, and display the highest priority source. Usually, this is a franchise or broker submission.
With a Trulia Pro subscription, you can change the web site linked to your Trulia.com listings. When some one clicks for more information about the property, you can redirect them to your own web site, and get more traffic to your site, as well as your other listings.
I think this is a sign that The Notorious R.O.B. might be on to something.