| Are Search Engine Robots Useful? |
| Invention Development Advice - Internet Marketing | |||
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Search engine ?spiders? are robots that seek out webpages to display in search engines. Below we?ll discuss how they work and why they?re important.
Search engine ?spiders? are robots that seek out webpages to display in search engines. Below we?ll discuss how they work and why they?re important. Robots actually have the same basic functionality that earlier browsers had. Just like these early browsers, search engine robots do not have the ability to do certain things. Robots cannot get past password protected areas. They do not understand frames, Flash movies, nor Images or JavaScript. Even if you use a robot, you have to click the buttons on your website. They can cease to function while using JavaScript navigation or when indexing a dynamically generated URL. A search engine robot retrieves data and finds information and links on the web. The robot makes a list of the web pages in the system at the ?submit a URL page, then searches for these web pages in order from the list the next time it goes on the web. Sometimes a robot will find your page whether you have submitted it or not because other site links may lead the robot to your site. Building your link popularity and getting links from other topical sites back to your site is important. The first thing a robot does when it arrives is to check for a robots.txt file. This file tells the robots which sites are off-limits. Usually these are files that should be of no concern because they are binaries or other files that are not needed by the robot. Submitting a new URL to a search engine adds this URL to the queue which the spiders are due to ?crawl? or visit. However, even if a URL isn?t submitted directly, the spiders usually find it through links from other websites. If you build link popularity, this will help the spiders find you faster. When the robots arrive, they?ll check your site for a file called ?robots.txt,? which will tell them what areas of the website they are not allowed to visit. Off-limits files may include things like binaries or other information that the spiders need not report back. To ensure that searchers get the right results with the most relevant response to their query, quick calculations are done to see that this happens. Server logs and log statistics program results can be checked by the user to see what pages have been visited and how often. Some robots may be easy to identify such as Google?s ?Googlebot?, while less well-known ones such as Inktomi?s ?Slurp? are not easily identifiable. Some robots even appear to be human-powered browsers. Once in the database, the information becomes part of the search engine directory and ranking process. Indexing is based on how the search engine engineers have decided to evaluate information returned by the spiders. When you enter a query into a search engine, it uses several calculations behind the scenes to determine which results you?re most likely looking for, out of the sites the spiders have returned. The database selects the best matches and displays them. The database is constantly updated by spiders crawling websites over and over again, to make sure that the most up-to-date information is available. The search engine sorts the information that has been delivered to the databases which has become a part of the search engine and directory ranking process. This allows it to display the results. Databases are updated periodically. Robots visit you regularly to find any changes to your pages so that the latest information will be available. The way in which the search engine is set up determines how the number of visits you get is calculated. This can vary with different search engines. If your website is down or experiencing a large amount of traffic, the robot may not be able to access the page they are trying to visit. The website may not be re-indexed when this occurs. This depends on how frequently your site is visited by the robot. In the hope that your site will be accessible again, the robot will re-visit your site to see if it has become accessible. More information: Justin Harrison is an internationally recognised Internet Marketing expert who provides world class Search Engine Optimization to website owners. For more information visit: http://www.seorankings.co.za
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