Marikina City, Philippines (PressExposure) July 23, 2008 -- Search engine optimization (SEO) is the process of improving the volume and quality of traffic to a web site. Usually, the earlier a site is presented in the search results or the higher it "ranks", the more searchers will visit that site. SEO can also target different kinds of searches, including image search, local search, and industry-specific vertical search engines. Visit the Search Engine Optimization Philippines to learn more of this.
The leading search engines, Google, Yahoo! and Microsoft, use crawlers to find pages for their algorithmic search results. Pages that are linked from other search engine indexed pages do not need to be submitted because they are found automatically.
Some search engines, notably Yahoo!, operate a paid submission service that guarantee crawling for either a set fee or cost per click. Such programs usually guarantee inclusion in the database, but do not guarantee specific ranking within the search results.
Yahoo's paid inclusion program has drawn criticism from advertisers and competitors. Two major directories, the Yahoo Directory and the Open Directory Project both require manual submission and human editorial review.
Google offers Google Webmaster Tools, for which an XML Sitemap feed can be created and submitted for free to ensure that all pages are found, especially pages that aren't discoverable by automatically following links. Learn more of this with the Search Engine Optimization Philippines.
To avoid undesirable content in the search indexes, webmasters can instruct spiders not to crawl certain files or directories through the standard robots.txt file in the root directory of the domain.
Additionally, a page can be explicitly excluded from a search engine's database by using a meta tag specific to robots. When a search engine visits a site, the robots.txt located in the root directory is the first file crawled.
The robots.txt file is then parsed, and will instruct the robot as to which pages are not to be crawled. As a search engine crawler may keep a cached copy of this file, it may on occasion crawl pages a webmaster does not wish crawled. Visit the Search Engine Optimization Philippines to learn more of this.
Pages typically prevented from being crawled include login specific pages such as shopping carts and user-specific content such as search results from internal searches.
In March 2007, Google warned webmasters that they should prevent indexing of internal search results because those pages are considered search spam. For more information about internet marketing and SEO, then visit Search Engine Optimization Philippines for more details.