Google serves some 80 percent of all
search queries on the Internet, making
it by far the most popular search
engine. Its popularity is due not only to excellent
search effectiveness, but also extensive
querying capabilities. However, we should
also remember that the Internet is a highly
dynamic medium, so the results presented
by Google are not always up-to-date – some
search results might be stale, while other
relevant resources might not yet have been
visited by Googlebot (the automatic script
that browses and indexes Web resources for
Google).
Table 1 presents a summary of the most
important and most useful query operators
along with their descriptions, while Figure 1
shows document locations referred to by the
operators when applied to Web searches. Of
course, this is just a handful of examples – skilful
Google querying can lead to much more
interesting results.
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