Google.com has 52.7% of the market share of online searches. Google is currently the world's largest search engine (Nielsen//NetRatings 6/07).
Getting Listed in Google (Information pulled directly from the Google.com website)
How do I add my site to Google's search results?
Getting your site indexed by Google is easy and free through either of the following methods:
1) You may directly submit your website here by typing your URL and any comments you may have about your website. While all submissions are not added to Google's index, this is a quick way to get Google to review your website.
2) It is not necessary, however, to submit your website in order for Google to index it. The Google search engine includes software known as "spiders" that regularly crawl the Web in order to find new websites and review currently indexed sites. Most sites that are indexed by Google are found this way and added to the index with no direct action by the webmaster or website owner. Not all websites are automatically added to the Google index, so read their webmaster guidelines or read the tips below to understand how to create a website that is Google-friendly and more likely to be indexed.
In order to find out if your website has already been found and indexed by our search engine spiders, perform a site search (search for site:mywebsite.com).
How can I create a Google-friendly site?
Things to do
Our webmaster guidelines provide general design, technical, and quality guidelines. Below are more detailed tips for creating a Google-friendly site.
1) Quality: Give visitors the information they're looking for
Google's emphasis is on creating high quality content, particularly on your home page, that is beneficial to the user. If a website has high quality content, it should attract other webmasters to link to your website and Google is likely to see it as a resource worth indexing. Also, use words that accurately describe the topic of each page and terms that your users are likely to search for when they look for information, a product, or a service like yours.
2) Popularity: Make sure that other sites link to yours
Not only do links help Google spiders to find your website, but they also indicate how well-liked and useful your website is. Incoming links are one part of the equation to determine the PageRank of each page on your website, and each link counts as a vote for the importance of the page it points to. It's important to remember that the Google algorithm can distinguish between natural and unnatural links. Natural links, which develop from high quality content being recognized by and linked to by other webmasters, are useful to getting indexed and obtaining rankings. Unnatural links, which are usually bought with the sole purpose of making your website seem more popular to search engines, are not useful.
3) Accessibility: Make your site easily accessible
Most importantly, your website should have a logical linking structure that makes navigation simple for all users as well as Google's spiders. Pages should all be found through static text links. You should also provide your users with a simple, straightforward site map to help them more easily navigate the site.
Dynamic pages also cause some problems for spiders, and Google recommends that you make static copies of your dynamic pages to increase your chances of having all your pages indexed and ranking. Remember to add the dynamic pages to your robots.txt file in order to avoid having duplicate pages for spiders to crawl, as this may result in a penalty from Google.
Some More Tips:
- Make sure that your TITLE tags and ALT attributes are descriptive and accurate.
- Check for broken links and correct HTML.
- Keep the links on a given page to a reasonable number (fewer than 100).
- Allow search bots to crawl your sites without session IDs or arguments that track their path through the site. These techniques are useful for tracking individual user behavior, but the access pattern of bots is entirely different. Using these techniques may result in incomplete indexing of your site, as bots may not be able to eliminate URLs that look different but actually point to the same page.
- Make sure your web server supports the If-Modified-Since HTTP header. This feature allows your web server to tell Google whether your content has changed since we last crawled your site. Supporting this feature saves you bandwidth and overhead.
- Make use of the robots.txt file on your web server. This file tells crawlers which directories can or cannot be crawled. Make sure it's current for your site so that you don't accidentally block the Googlebot crawler. Visit http://www.robotstxt.org/wc/faq.html to learn how to instruct robots when they visit your site. You can test your robots.txt file to make sure you're using it correctly with the robots.txt analysis tool available in Google webmaster tools.
- If your company buys a content management system, make sure that the system can export your content so that search engine spiders can crawl your site.
- Use robots.txt to prevent crawling of search results pages or other auto-generated pages that don't add much value for users coming from search engines.
The basic principles and specific quality guidelines below are intended as examples of manipulative behavior that could hurt a website's rankings in Google. This is not to say that other manipulative behavior solely meant to improve search engine rankings won't also penalize a site. These are simply examples of the type of behavior to avoid. Google's logarithm is designed to reward webmasters whose focus is to provide high quality products, service, and information to the user. Websites that you believe are abusing Google's quality guidelines can be reported to Google in order to establish scalable solutions to major threats to the integrity of search engine results pages at https://www.google.com/webmasters/tools/spamreport.
Design your website with the user in mind rather than for search engines. Tactics to manipulate search engine rankings that provide no benefit to users can be penalized by search engines. This means avoiding any practice that has no purpose other than to trick Google into giving your website higher rankings than it would get naturally. These methods include participating in unnatural linking schemes, or otherwise violating Google's Terms of Service.
Quality guidelines - specific guidelines
If you determine that your site doesn't meet these guidelines, you can modify your site so that it does and then submit your site for reconsideration.
How often does Google crawl the web?
Google's spiders are constantly crawling the Web and making updates to their index, but the commonly accepted idea is that a major crawl and re-indexing occurs roughly every month. Websites are not all crawled equally, either, and the frequency each is crawled depends on factors such as PageRank, inbound links, and more. This is all done by computer software. Google does not accept payment to crawl websites with more frequency.
PageRank is Google's rating of each Web page's value, and it determined by a number of different factors. Each inbound link (or vote) factors into PageRank, but not all links are counted the same. Links from higher quality results benefit the page they link to more than a page with a PageRank of 0. An indication of PageRank can be viewed on the Google Toolbar, although this is simply an indication and there os no guarantee that this number is up-to-date or accurate.
PageRank is only a small part of Google's algorithm's selection of websites to display in search engine results. The algorithm also carefully analyzes websites to return the most relevant websites to the searcher's query. A combination of higher PageRank and relevancy is what determines search engine results placing.