Over the past 12 months, we successfully demonstrated the value of our intellectual property, continued to attract the interest of operators around the globe to TiVo's advanced television solutions and TiVo's total subscription number moved to a strong positive trajectory.

ENGADGET: TiVo releases Q4 results, announces transcoder and IP set-top box on the way

Netflix offers a number of subscription packages that differ in the number of DVDs a customer can rent out at any given time.

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The second challenge is the balance between the amount OpenGamma can charge for its subscription and the number of customers that will pay.

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