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Trefis [trefis.com] offers visual snapshots that demonstrate the relative importance of products that comprise a specific company's stock price. People can interactively personalize any forecast using their local knowledge or expertise to build conviction in a stock price estimate or ask questions and vet opinions on specific forecasts with experts and friends.

Check out the examples of Apple, IBM or AT&T as starting points. Be sure to explore the interactive features, which are more sophisticated than might be expected at first sight.