I just attempted to respond to the email you sent me but the message came back as undeliverable.
Trulia does have quite a few partner sites. There are many, including Postlets, who syndicate their listings to us. You can find a short list of those partners at http://www.trulia.com/submit_listings/.
Through our Trulia Publishers Platform, the listings on our site are syndicated to other websites as well. We currently power the real estate search for Kiplinger.com, Seattle Weekly, American Towns and we just recently announced our partnership with the Washington Post which you can read about at http://www.truliablog.com/2009/02/11/trulia-teams-up-with-wa
I hope this better addresses your question. If you need any further assistance, please let me know.