Here's one: it just might save your product.
We heard in today's WOMMA Webinar (Achieving Marketing ROI by Harnessing the Power of WOM, available for audio download within 24 hours) of the importance of monitoring the conversations about your products, specific to Tropicana in this case.
Most of us associate Tropicana with its quarter-century old logo, the requisite peppermint straw brazenly stuck into the side of a perfectly ripened orange. The logo may have been familiar, and that's why it worked.