How many apps do you currently have on your Facebook account?

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* 1. How many apps do you currently have on your Facebook account?

In a typical week, about how many songs or other music files do you download from the internet?

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* 2. In a typical week, about how many songs or other music files do you download from the internet?

In a typical week, about how much money, in U.S. dollars, do you spend on songs or other music files you download from the internet?

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* 3. In a typical week, about how much money, in U.S. dollars, do you spend on songs or other music files you download from the internet?

Which type of apps do you currently have on your digital devices (computer, tablets, phones, etc.)? (Check all that apply)

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* 4. Which type of apps do you currently have on your digital devices (computer, tablets, phones, etc.)? (Check all that apply)

In a typical day, which types of apps do you use on your digital devices (computer, tablets, phones, etc.) most often?

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* 5. In a typical day, which types of apps do you use on your digital devices (computer, tablets, phones, etc.) most often?

Which types of apps are most useful to you?

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* 6. Which types of apps are most useful to you?

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