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HIDDEN SPONSORED LINKS SEARCH ENGINE
[Dec 23, 2004] If you access this
link, you'll find a hidden sponsored links Search Engine of Google. For instance,
if you search
'cheap laptops', you
get 25 ads from businesses which bought these keywords.
The position of these sponsored links within the results is determined by
the product
of cost-per-click (CPC) and clickthrough rate (CTR).