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 itâ€™s much harder. A better option is to consider SEO even before you begin to build your web site, if thatâ€™s at all possible. It may not be. But if thatâ€™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. As you can yourself understand that to build a SEO friendly site could look tougher but planning this before can make your site so easy to work on and the much harder part is completed before, so later it will be helpful.
Know your target
Before you even start contemplating how to build your web site, you should know in what types of search engines itâ€™s most important for your site to be ranked. Search engines are divided into several types, beyond the primary, secondary, and targeted search engines. In addition, search engine types are determined by how information is entered into the index or catalog thatâ€™s used to return search results. The three types of search engines are:
Crawler-based engines: 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 engines: Human-powered search engines rely on people to submit the information that is indexed and later returned as search results. Sometimes, humanpowered 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. Itâ€™s no longer completely human-controlled. A newer search engine called Mahalo (www.mahalo.com) is entirely human-powered, however, and itâ€™s creating a buzz on the Web.
Hybrid engine: 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.
Itâ€™s important to understand these distinctions, because how your site ends up indexed by a search engine may have some bearing on when itâ€™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.
In all cases, the accuracy of search engine results will vary according to the search query that is used. For example, entries in a human-powered search engine might be more technically accurate, but the search query that is used will determine if the desired results are returned.