Googlebot crawls the Internet searching for new and updated pages to add to Google’s index. There are numerous computers employed to complete this laborious and complex task. The algorithm determines which sites to crawl, how often the sites should be crawled and how many pages to that should be crawled. The process begins with a pre-determined list of webpage URLs based upon a previous crawl process. Googlebot specifically searches for SRC and HREF links on every pages. These links are added to new lists to search. Anything a site is visited, Googlebot makes note of new sites, dead links and changes to existing sites.
Understanding Googlebot is essential for any website owner seeking to make relevant links that will increase ranking in search engines. In general, Google aims to crawl every page on the website on each visit without disturbing the company’s website bandwidth. Consider these tips for Googlebot:
1. Prevent Googlebot From Crawling Your Website to Improve Speed
Webmasters can block Googlebot from content on your website by using files such as robots.txt to block access to files and directories on a company’s servers. This file will prevent Googlebot from crawling content on the site. Many companies have experienced a slight delay before the file took effect. In most instances, the file is effective if it is placed in the proper location. For instance, the file must be in the top directory of the server versus in the subdirectory to have any effect.
2. Prevent “File Not Found” Error Messages
Create an empty file named robot.txt and use the nofollow meta tag to prevent Googlebot from following links on the website. When rel=”nofollow” is added to an individual link, Googlebot will not follow. This will prevent these common error messages.
3. Use the Fetch to Determine How Your Site Appears to Googlebot
In Webmaster Tools, users will find Fetch. This Google tool will help users determine how the company’s website is viewed by Googlebot. This helps webmasters troubleshoot websites for content issues or discoverability results.
4. To Improve Visibility Review and Prevent Crawl Errors
Googlebot follows links from one page to another. This process helps the algorithm find new sites. If crawl errors are found, webmasters can find them listed on the Crawl Errors page in Webmaster Tools. These errors should be reviewed periodically to identify problems with the website. Webmasters should take action to prevent crawl errors.
5. Make AJAX Content Crawlable and Indexable
To make AJAX-based content both indexable and crawlable, there are some steps that may be taken. This will ensure that AJAX application content will appear in the search results.
6. Prevent Spammers Not Googlebot
Since Googlebot’s IP addresses change periodically, a user agent may be needed to verify the legitimacy of the bot access. Reverse DNS lookups are often used to determine whether the bot is legitimate. Googlebot will respect the text file, robots.txt, but spammers will circumvent the file. Know the difference between Googlebot and spammers for the best results.
About The Author:
John Zwissler from AddMe.com – AddMe is a resource for free search engine submission and online marketing tools. Try our free search engine submission and subscribe to our bi monthly newsletter.