Social media complements and augments other forms of marketing such as E-mail marketing, search engine optimization and direct marketing, the study said.

研究还指出，社交媒体能够补充并增强其他营销方式的效果，如电子邮件营销、搜索引擎优化，以及直接营销。

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Personalized marketing campaigns can include many different customer touch points, including direct mail, E-mail, personalized URLs, and customized web landing pages.

个性化营销策略可以包括客户的不同介入点，比如直邮、电邮或者是个人域名与网站等等。

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Research by the Direct Marketing Association and e-mail marketing firm Experian showed that 26% of marketers are confused about the new directive and do not know what impact it will have on their business.

BBC: NEWS | Technology | Top UK sites 'fail privacy test'

"Branded media, context-based marketing, direct mail, preference-based marketing (agreeing to get ads via e-mail) it's what people are missing, " says Killen.

FORBES: Selling the World

The SIIA white paper says software sellers manipulate the rules of Internet auction sites to obtain e-mail addresses of bidders on software, creating a direct-marketing channel.

CNN: Technology - New online software piracy emerges