Before You Build Your Site
One of the most common misconceptions about SEO is that it should be implemented after a web
site has been built. It can be, but it’s much harder. A better option is to consider SEO even before
you begin to build your web site, if that’s at all possible. It may not be. But if that’s the case, you
can still implement SEO strategies in the design of your site; it will just require a lot more work
than building it in at the beginning.
Know your target
Before you even start contemplating how to build your web site, you should know in what types
of search engines it’s most important for your site to be ranked. Search engines are divided into
several types, beyond the primary, secondary, and targeted search engines that you learned about
in Chapter 2. In addition, search engine types are determined by how information is entered into
the index or catalog that’s used to return search results. The three types of search engines are:
To this point, the search engines discussed fall largely into this
category. A crawler-based search engine (like Google) uses an automated software agent
(called a crawler) to visit, read, and index web sites. All the information collected by the
crawler is returned to a central repository. This is called indexing. It is from this index
that search engine results are pulled. Crawler-based search engines revisit web pages
periodically in a time frame determined by the search engine administrator.
Human-powered search engines rely on people to submit
the information that is indexed and later returned as search results. Sometimes, human-
powered search engines are called directories. Yahoo! is a good example of what, at one
time, was a human-powered search engine. Yahoo! started as a favorites list belonging to
two people who needed an easier way to share their favorite web site. Over time, Yahoo!
took on a life of its own. It’s no longer completely human-controlled. A newer search
engine called Mahalo (
) is entirely human-powered, however, and it’s
creating a buzz on the Web.
A hybrid search engine is not entirely populated by a web crawler, nor
entirely by human submission. A hybrid is a combination of the two. In a hybrid engine,
people can manually submit their web sites for inclusion in search results, but there is also
a web crawler that monitors the Web for sites to include. Most search engines today fall
into the hybrid category to at least some degree. Although many are mostly populated by
crawlers, others have some method by which people can enter their web site information.
It’s important to understand these distinctions, because how your site ends up indexed by a search
engine may have some bearing on when it’s indexed. For example, fully automated search engines
that use web crawlers might index your site weeks (or even months) before a human-powered search
engine. The reason is simple. The web crawler is an automated application. The human-powered
search engine may actually require that all entries be reviewed for accuracy before a site is included
in search results.
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