Taking a question from a Motley Fool reader, Austin Smith discusses LinkedIn and whether it's still a good investment. Despite its high valuations, Austin, and both Tom and David Gardner, believe so. The company has three revenue streams in personal membership, corporate membership, and advertising, and unlike Facebook, it has little difficulty monetizing its members. Overseas growth is strong, and its moat, revenue, and business model makes it look like a good investment, Austin says.

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Austin Smith owns shares of Zillow. The Motley Fool recommends and owns shares of Facebook, LinkedIn, and Zillow. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.