Zillow (NASDAQ:ZG) is showing no signs of slowing down. Up 75% just this year, and with a price-to-sales ratio almost 3 times that of its close competitor Trulia, the expectations for Zillow are growing ever higher.

But proceed with caution.

Should this growth company's high valuation be met with skepticism?

In the following video, Motley Fool financial analysts David Hanson and Tyler Riggs remind us that with growth stocks like Zillow it's important to think in the long-term and to focus on the business, not just the impressive stock price. With that in mind, David and Tyler explain why Zillow is a stock worth watching as the rest of the year unfolds.