The
Searchlight by Danny Sullivan ~, Network World (www.nwfusion.com
)
It
can be surprising to discover that running the same query on several
search engines can yield different results. This is because search engines
are sort Of like movie reviewers: They all have their own opinions. That's
why you may want to use more than one search engine when looking
for something. Of course, it's time-consuming to run your search at
multiple places. That's where Metasearch engines Come in. Also called Metacrawlers, metasearch engines route
Your query to several search engines at the same time, then provide you
with a single results list. This gives you a comprehensive review of top
listings at major search engines without having to visit them
individually. One of the
Web's first metasearch engines was MetaCrawler.
it was purchased by Go2Net (www.go2net-com), which now uses MetaCrawler's
technology to power its searches. When you search, Go2Net sends your
request to places such as Altavista, Excite,
Google, LookSmart and Lycos. Their answers are blended together
into a single page of results, and any sites listed at more than one
search engine are bumped to the top of tile list.
Savvy Search (wwwsavvYsearch-com), another longtime metasearch
engine, was recently purchased by CNET.
It continues to operate on its own and also Powers CNET's Search.com site
(Wwwsearch.com). At either
place, you can perform a general rnetasearch or one of a variety of
"specialty" metasearches. For instance, you could query several
MP3 search engines at the same time or check on auction listings from
places Such as Amazon.com and ubid.
ProFusin(wwwprofusion.com) lets you control
which search engines to query right from its home page-You can also
increase the number of results presented and have it check for dead links.
An added feature is the ability to personalize your visit by having
ProFusion remember which search engines you prefer to use. It can even
memorize your favorite searches and automatically rerun them according to
a schedule unlike the services above, Dogpile (wwwdogpile.com) doesn't
blend results from different search engines into one list. Instead, it
displays each engine's results separately. This is helpful if you prefer
to see exactly how each
search engine displayed its listings.
For
instance, a search for "hubs" organizes relevant pages from
Nortel Networks together, while pages from Intel come under that company's
heading. Metasearch utilities run from your computer and offer extra
features that are particularly useful to those doing regular research.
They can sort results in various ways, such as by URL, page title or
search engine. You can
also have your search utility download some or all of the pages that were
found. Some will even highlight your search terms on the downloaded Web
pages, which lets you quickly spot pertinent sections.
Bulleye,
from Intelliseek, is a leading program for Windows; Copemic ( www,copernic.com ), another
leading program, is available for Windows and Macintosh. Both utilities
come in free and fee versions. If you shell out some money, you get
additional advanced features and eliminate banner ads that the free
version displays. Windows users might also try Express Search ( www.express.infoseek.com
), a free search utility provided by Go Network. As for Mac users, they have the Sherlock metasearch utility in
their operating system. It's available in Mac operating system 8.5 or
higher, and more information can be found at www.apple.com/sherlock/
. There are more search
utilities to explore aside from the ones mentioned here. A list of other
packages can be found at. If metasearch is so great, why doesn't everyone use it? Well, there can be problem's.
Since metasearch engines depend on other search engines, it can
take longer for them to retrieve results.
They may even fail to retrieve results from all the places they
check. Some people also prefer the greater control You may get when using
a single search engine.
Despite
these Problems' its worth exploring the world of metasearch -- especially
if you've queried one or two search engines and come up empty.
Chances are switching to metasearch, rather than try another single
search engine, will save you time and frustration. |