A better bet would be for the firm to charge corporate users for premium services.

公司有个更好的选择，就是向企业用户收取增值服务费。

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This makes it hard for operators to build brand loyalty, let alone sell premium services.

如此一来，运营商就很难让客户建立起品牌忠诚度，更不用说向他们推销额外的收费服务了。

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The company earns money from advertising and premium services-and by taking a cut of sales of content sold through the site.

该公司靠广告和增值服务—以及通过该网站进行的内容销售的提成来赚钱。

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But premium services like custom wallpaper, decorative themes and online games are also taking off.

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The latter offers free contact management features, but Oracle plans to add premium services for a monthly fee.

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It also plans to offer premium services, such as the printing of photobooks documenting the progress of a relationship.

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