You probably use a search engine (SE) like Google or Yahoo every time you use the internet but do do know how they work ? If you have a website or intend creating one it is important to have at least a basic knowledge of them.

The most common type of SE is a crawling search engine. This uses a computer program called a 'spider' to build up a database of the contents of websites which can then be searched by users. To do this it must first, find web pages and store their content and then analyse each page's content

The spider has access to a list of all the domains on the web. It visits a web page, reads it, and then follows links to other pages within the site. This is what it means when someone refers to a site being "spidered" or "crawled." The spider returns to the site on a regular basis, such as every month or two, to look for changes. How often it returns depends on how important it views the page or site. Every piece of text that the spider finds is indexed. This means sorting the data into a form that it can search easily later; like a telephone directory for example.

The next two stages are the most interesting and shrouded in secrecy. A program ranks the importance of each website and each page depending on a set of criteria such as how many other sites link to it, how relevant these other sites are and how these 'inward linking' sites are ranked themselves.

When a search engine user searches for a word or series of words the SE looks through its index for matching words. The all-important order in which it brings back the results determines where a page ranks in the search engine results page (SERP) and is calculated by a complex method involving many factors. The search engines like Google, Yahoo and MSN keep their methods of doing this secret so that web developers cannot easily influence the results.

What we do know about the process is that the mission of the SE is to find the best results for the person searching and sometimes penalises sites that try to influence this by purely artifical means.

Search Engine Optimization aims to present a site to the SE spiders in such a way that it can recognise the site as a useful reference on the particular subject. There are many aspect to this and the techniques are far too  numerous and complex to discuss here.

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Testimonial

Cquent.ie

Website Design and eCommerce Website Development

Setting up a website is an integral part of any business in the current technologically dependent culture. It forms the face of any business on line. Often it can be the first contact someone has with your business and will help form the first impression a potential customer or client will get. Therefore, it was imperative for me to find a web design team that had the experience, professionalism and a remarkable understanding of what I wanted to achieve on line. Cquent delivered on all of these aspects and more. I couldn't recommend the service highly enough. From the very beginning of Music4Children they made sure every aspect of the web design reflected the vision and ethos of my business. The support and advice I received was outstanding and as a result I am a returning customer as we now review my online presence to accommodate my expanding business. I recommend the Cquent web design team with enthusiasm.

Website Design and eCommerce Development Services

Date published: 29/07/2015

5 / 5 stars
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