LONDON -- Nate Weisshaar explains whether or not it is good for a company to have debt on its books. He looks at good debt and bad debt, and discusses Rio Tinto (LSE:RIO) (NYSE:RIO)Royal Dutch Shell (LSE:RDSB) (NYSE:RDS-B) and Premier Foods (LSE:PFD).

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Neither Nate Weisshaar nor Sonia Rehill have positions in the stocks mentioned above. The Motley Fool has no positions in the stocks mentioned above. 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.