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D
Download
The process of retrieving information
from any computer is called Downloading.
When one computer sends information
to another, it is called Uploading.
Dynamic Content
A page that is generated just as the
user views it. The content delivered
to the user is often updated on-the-spot
out of a database or based upon the
users browser. It used to be easy to
spot one of these pages, but with most
systems now allowing dynamic content
from any page at any time, you just
never know. Search engines no longer
penalize for dynamic content as long
as the URL does not include submitted
data (a ? question mark in the url).
Dynamic IP Address
Defaults
Term used by ad networks to describe
a type of banner that is served to a
site when no paying banner is available.
Usually a PSA type of advertisement
unless the ad network permits publishers
to specify their own default advertisement.
Defeating Cache
This process, also known as "cache
bursting", is accomplished by adding
a random number to the banner HTML each
time the page is reloaded. This causes
a separate banner request to be sent
to the server, thus insuring the banner
is not cached and banner advertisement
impressions are not undercounted.
Delisting
When pages are removed from a search
engines index. This may happen because
they have been banned or for other reasons,
such as an accidental glitch on the
search engine's part.
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