Google's Guideline for any Search Engine Optimization Specialist

The following information is provided by Google's official website to provide Search Engine Optimization suggestions for webmasters & any Search Engine Optimization Specialist:

• Age of the domain.
• Age of website content.
• Regularity of new content increase.
• The age of the link, the level of the connected site, and its relevance.
• General station factor.
• Negative on-site factors (for example, too many meta tags are obviously optimized and can harm the site).
• Uniqueness of content.
• Related terms used in content.
• Google page level (Google PR).
• External links, linked links to external links, on those pages.
• Citation and source of research (indicating that the content is of a research nature).
• The roots listed in the search engine database and their related terms (such as finance / financing).
• The reverse link imported, and the text of the link.
• Negative scores for some imported links (perhaps those from low-value pages, exchanged reverse links, etc.).
• Reverse link acquisition rate: too much too fast means "unnatural" link purchase activity.
• The text surrounding the reverse link that is exported and imported. For example, if a link is surrounded by "Sponsored Links", the link may be ignored.
• Use "rel=nofollow" to suggest that the search engine ignore the link.
• The depth of the file at the site.
• Source from purchased ads like: Google AdSense.
• Delete the rate of importing links.
• Use subdomains, use keywords and content quality on subnets, and negative scores from these activities.
• Semantic link to the main file.
• Rate of increase or change.
• Host Service Provider IP and the number/quality of other sites under the IP.
• Technical details, like webpages that were removed with 301 redirects, 404 server headers for non-existing webpages instead of 200 server headers.
• Host service provider uptime.
• Whether the site displays different content (cloaking) for different classes of users.
• Exported links that are not corrected or invalid in time.
• Unsafe or illegal content.
• HTML code quality, as well as the number of errors.
• Actual click rate ratings observed by search engines from their search results.
• Manual rating by the person who most frequently accesses the search results.