Trulia uses 302 redirects that prevents the flow of links to the brokers’ source sites which essentially stops Google from following these links and makes Trulia the original source of the content. We at Fizber don’t find it wrong because these sort of things are common with any general online advertising arrangement. And we don’t know what all the hype is about. It’s a standard practice online, and some of the top sites around the web use this method as well. If you complete a link exchange with another site, you purchase a follow or nofollow link. Nofollows are designed to send traffic, not search authority. So why the stink now? Source: Fizber.com