Music, software, and apps are the most popular content that internet users have paid to access or download, although the range of paid online content is quite varied and widespread.

尽管付费在线内容的范围很广，但音乐、软件和应用程序是互联网用户付费访问或下载的最受欢迎的内容。

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Keep in mind this number does not reflect the amount of free books downloaded by users, only the paid books.

记住，这还不包括那些免费下载的电子书，只计算了付费的版本。

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33% of internet users have paid for digital music online.

33%的互联网用户曾为在线数字音乐付费；

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Mobile carriers around the world are beginning to allow their customers to purchase Skype credit directly through their plans, including pre-paid users.

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Rift now has more than 1 million paid users.

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The service is free for paid users of Rypple.

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