The collection of user information by publishers and advertisers has raised consumer concerns about their privacy.[28][60] Sixty percent of Internet users would use Do Not Track technology to block all collection of information if given an opportunity.[92][93] Over half of all Google and Facebook users are concerned about their privacy when using Google and Facebook, according to Gallup.[94]
Push marketing is a proactive technique that enables e-marketers to "push" their product/service information to Web visitors or shoppers without their requesting it. Banner advertising, pop-up advertising, e-mail promotion, and spamming belong to push marketing. For instance, e-marketers can rent designated space from Internet service providers such as America Online or MSN for their banner or pop-up ads. Using animated graphics, appealing messages, and links, e-marketers try to lure visitors to their sites to buy their products or services. Many Internet users, however, find such ads annoying and employ software that blocks pop-ups and banner ads. <
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