Just don't try realtytrac. If you really think it's not a scam, try the free trial. You'll see how fake it is. Apparently they want to sell houses for less than $2,000 which have "notices of defaults". To buy these houses, they take you to another site for which you pay to learn how to pay such houses. Get the scam? Yeah. And if you forget to cancel the free trial, you're getting charged as well.
Don't do it. I don't get why Trulia would partner with realtytrac. It wasn't to help us searching for houses, it was so trulia could gain money. Cmon, no corporation does anything for the people without some gain. Well, generally.