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You may have already given an ad company personal information...
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For example:
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- DoubleClick,
the Web's largest ad company, sponsors
PlazaDirect.com
(formerly NetDeals.com), which invites you to sign up for various
sweepstakes or for catalogs and other "special offers". PlazaDirect.com
asks for personal information, such as your name, mailing address,
and email address. Its
privacy policy
explains how it shares the information it collects
with organizations that provide "marketing materials to you".
For more information on this issue, see the
article
in the January 25, 2000 issue of USATODAY.com. Follow-up news from June 7, 2000 is
here.
- MatchLogic, an ad company,
also sponsors several different
give-aways
that ask for personal information. Their
privacy policy
describes how they combine some of the data gathered from sweepstakes
registration with "surfing behavior".
- PremiumNetwork, another ad company,
sponsors give-aways and helps others set up similar
online promotions as well.
- Personal information can "leak" to ad companies other ways. For an example, see this
CNET article.
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