In the video below, Fool tech and telecom analyst Andrew Tonner discusses LinkedIn's (LNKD.DL) incredible growth streak, and tells investors what to look for when the company reports earnings tomorrow. LinkedIn has beaten analysts' estimates on earnings by more than 50% for three of the last four quarters. Can it do so again? The company's current sky-high valuation is predicated upon its continued ability to maintain this unbelievable growth. If it hits, it could be another major driver for shares upward; but if we see that growth starts to slip, shares could take a hit.