In the preceding video, Fool.com analyst Austin Smith emphasizes how important it is to be able to recognize and differentiate between a good company at a fair price and and a great company at an outrageous price. By their very nature, markets will inevitably and eventually adjust for overpricing, and when this happens, the correction can deliver a major blow to shareholders. This is something to keep in mind with stocks such as LinkedIn(LNKD.DL), Zillow(ZG -1.61%), and Chipotle(CMG 2.71%) -- all impressive companies with great performance -- but it's imperative to keep in mind how quickly prices can turn when investing in growth stocks.