Trading at a premium that trumps even Facebook, LinkedIn (LNKD.DL) investors have very high expectations for this professional social network. Last quarter, the company certainly delivered. Its largest segment, Talent Solutions, delivered an 80% year-over-year gain for investors. But can LinkedIn continue to post such incredible growth?

In the video below, Fool contributor Daniel Sparks identifies four metrics that will help investors gauge LinkedIn's growth when it reports earnings on Aug. 1.