To trigger these results, search for a product category or the brand name and the product category. For example, this search for Nikon Digital Camera offers a direct answer from MSN Shopping with direct links to product pages for the top three results. This "fast answer" also shows user ratings, megapixel info, and pricing data.
Here's another example search, this time a search for Sony Televisions.
More MSN Search "Fast Answers" are listed here.
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