Factor Importance in SEO

Search engine ranking in Search Engine such as Google, Yahoo, Live is influenced by 5 factor importance.

1. Essential

a. Title document

The document title is the text within the <title>...</title> tags in the HTML code of your web page

b. Global link popularity (Google,Live,Yahoo)

The global link popularity measures how many web pages link to your site. The number of web pages linking to your site is not as important as the quality of the web pages that link to your site.
All major search engines take the quality and the context of the links into account. Search engines assume that your web page must offer relevant content if many quality sites link to it.

c. Link teks of inbound link

Inbound links are links from other web sites to your site. If many other sites link to your site, then search engines consider your site to be important. However, the number of links is not as important as is the relevance of the linking page and the link text used in linking to your site

d. use in body text

The body text is the text on your web page that can be seen by people in their web browsers. It does not include HTML commands, comments, etc. The more visible text there is on a web page, the more a search engine can index. The calculations include spaces and punctuation marks

2. very important

a. Age website

Spam sites often come and go quickly. For this reason, search engines tend to trust a web site that has been around for a long time over one that is brand new. The age of the domain is seen as a sign of trustworthiness because it cannot be faked

b. in H1 headline texts

H1 headline texts are the texts that are written between the <h1>...</h1>tags in the HTML code of a web page. Some search engines give extra relevance to search terms that appear in the headline texts

3. important

a. domain name

he domain name is the main part of the web page address

b. Keyword use in page URL

The page URL is the part after the domain name in the web page address

c. Link from social network(del.icio.us, digg,technorati)

On social network sites, people decide which web sites are popular. This means that the popularity on social network sites cannot be easily influenced. For this reason, search engines might trust web sites more if they are popular on social networks

d. server speed

Popular web sites often have faster server response times compared to smaller unimportant sites. In addition, most search engines index more pages from fast web sites

e. Keyword use in H2-H6 headline texts

H2, H3, H4, H5 and H6 headline texts are the texts that are written between the <h2>...</h2>, <h3>...</h3>, etc. tags in the HTML code of your web page. Some search engines give extra relevance to search terms that appear in the headline texts

f. Keyword use in IMG ALT attributes

The <img alt> attribute defines an alternative text for an image when the user uses a text browser or when the user has turned off the display of images in the web browser application. Microsoft's Internet Explorer displays the alternative text if the user puts the cursor over the graphic

g. Top level domain of website

Web sites with certain top level domains (TLD) are statistically more likely to contain higher quality, trustworthy contents. For this reason, search engines might prefer web sites with restricted TLD (.edu, .gov., .mil) over younger TLD (e.g., .biz, .info, .jobs). In addition, country code TLD (e.g., .ca, .de, .fr) are often preferred in the country's local search results.

h. Keyword use in bold body text

The body text is the text on your web page that can be seen by people in their web browsers. The bold body text uses a darker and heavier face than the regular type face. It appears between ... or ... tags in the HTML source of your web page. CSS is not recognized. The statistics include spaces and punctuation marks

i. Number visitor (Alexa)

Search engines might look at web site usage data, such as the number of visitors to your site, to determine if your site is reputable and contains popular contents. The Alexa.com traffic rank is based on three months of aggregated traffic data from millions of Alexa Toolbar users and is a combined measure of page views and number of site visitors

4. moderately important

a. Keyword use in same site link texts

Link texts are words and sentences that are used as links. Same site link texts are the link texts of the links that point to a web page on the same domain

b. in outbound link texts

Link texts are words and sentences that are used as links. Outbound link texts are the texts within the <a>...</a> tags when the <a> tag links to a web page on a different domain. This chapter examines if Google.com gives relevance to search terms in outbound link texts

c. in same site link URL

Links connect one web page to another. Same site links are the links in <a href> attributes that point to other pages on the same domain. This chapter examines if search terms in same site link URLs are relevant to Google.com

d. in outbound link URL

Links connect one web page to another. Outbound links are the links on a web page that point to web pages on other web sites, i.e. links to other domains

e. meta description

The Meta Description tag allows you to describe your web page. This chapter tries to find out if Google.com takes the Meta Description tag into account. Some search engines display the text to the user in the search results

f. number of trailing slashes in URL

The number of trailing slashes (/) in the URL indicates where a web page falls in a site's overall hierarchy. If the URL contains many trailing slashes, meaning it is placed in a sub-sub-directory, then the webmaster does not seem to think that the page is important in relation to the other pages.

5. slightly important

a. HTML Validation

Web pages are written in special languages called HTML and CSS. Like any language, HTML and CSS change constantly. The World Wide Web Consortium (W3C) is the governing body that establishes what is valid HTML/CSS and what is not. Search engines obey the HTML/CSS standard. If there are errors in the HTML/CSS code of your web page, then search engines might not be able to read everything of your web page

b. Readability level of web page

The Flesch Reading Ease test is a United States governmental standard to determine how easy a text is to read. It measures the approximate level of education necessary to understand the web page content. Higher scores indicate the text that is easier to read, and lower numbers mark harder-to-read texts. Scores among different languages are not comparable.

c. Keyword use in meta keywords

The Meta Keywords tag allows you to define which search terms are important to your web page according to your opinion. It should be placed between the <head>...</head> tags in the HTML code of your web page. This chapter tries to find out if Google.com gives relevance to search terms in the Meta Keywords tag

d. in the first sentence of the body text

The first sentence of the body text is the first sentence after the <body> tag in the HTML code of your web page. Some search engines give more relevance to search terms when they appear in the first sentence. Some will use your first sentence as the description of your page on the search result page

e. HTML comments

HTML comment tags are "hidden comments" in the HTML code of your web page. They are not visible to the user. This chapter tries to find out if search terms in the HTML comment tags are relevant for a good ranking in Google.com.
Example:
<!-- comments with keywords -->

Source:Axandra.com

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