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Invisible Web
Definition
The portion of the Web not accessible through Web search engines.
Information
The invisible Web sounds very mysterious, but surfers visit it regularly, perhaps without even realizing it. "Invisible" Web pages are
often dynamic pages within database-driven sites, whereas much of the
"surface Web" consists of static pages. The URLs can often
be identified by symbols such as the question mark (?).
Search engines are well aware of the invisible Web, but limitations
in time and money could make it unfeasible to index all of the dynamic
page possibilities. Even if resources were no issue, dynamic pages tend
to present more challenges than static pages in terms of ranking useful
results.
Most of the dynamic, database-driven sites in question do feature site
search, so unearthing information becomes much easier if you can pinpoint
the most appropriate site to search.
Synonyms
deep Web
Related Terms
search engine
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