Last year, when Mark Hulbert released his five-year rankings of the over 200 investment newsletters services he follows in the Hulbert Financial Digest, The Motley Fool's Inside Value service sat in the top spot.

The service aims to identify businesses trading a deep discounts to their true values -- such recommendations have included Berkshire Hatahway (NYSE:BRK-A) (NYSE:BRK-B), Markel , Bank of America, and even non-traditional value stocks like Amazon.com.

Joe Magyer is the lead advisor of the Inside Value service. Joe recently sat down with the guys from The Motley Fool's everything-financial show, Where the Money Is, to discuss a wide range of topics. The guys discuss long-term business risks to the Berkshire Hathaway business model, the genius behind Markel, and lessons Joe has learned since moving to Australia in early 2013.

In this segment of the interview, Joe addresses two possible risks that could strike Berkshire Hathaway's long-term potential. 

The inspiration for Inside Value
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David Hanson owns shares of Markel. Joe Magyer owns shares of Amazon.com, Berkshire Hathaway, and Markel. Matt Koppenheffer owns shares of Amazon.com, Bank of America, Berkshire Hathaway, and Markel. The Motley Fool recommends Amazon.com, Bank of America, Berkshire Hathaway, and Markel. The Motley Fool owns shares of Amazon.com, Bank of America, Berkshire Hathaway, and Markel. Try any of our Foolish newsletter services free for 30 days. We Fools may not 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.