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Search Engine Optimization (SEO) |
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SEO技術 - Factors Affecting Ranking in Search Engine |
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- Age of site
- Length of time domain has been registered
- Age of content
- Regularity with which new content is added
- Age of link and reputation of linking site
- Standard on-site factors
- Negative scoring for on-site factors (for example, a dampening for sites with extensive keyword meta tags indicative of having being SEO-ed)
- Uniqueness of content
- Related terms used in content (the terms the search engine associates as being related to the main content of the page)
- Google Pagerank (Only used in Google's algorithm)
- External links, the anchor text in those external links and in the sites/pages containing those links
- Citations and research sources (indicating the content is of research quality)
- Stem-related terms in the search engine's database (finance/financing)
- Incoming backlinks and anchor text of incoming backlinks
- Negative scoring for some incoming backlinks (perhaps those coming from low value pages, reciprocated backlinks, etc.)
- Rate of acquisition of backlinks: too many too fast could indicate "unnatural" link buying activity
- Text surrounding outward links and incoming backlinks. A link following the words "Sponsored Links" could be ignored
- Use of "rel=nofollow" to suggest that the search engine should ignore the link
- Depth of document in site
- Metrics collected from other sources, such as monitoring how frequently users hit the back button when SERPs send them to a particular page
- Metrics collected from sources like the Google Toolbar, Google AdWords/Adsense programs, etc.
- Metrics collected in data-sharing arrangements with third parties (like providers of statistical programs used to monitor site traffic)
- Rate of removal of incoming links to the site
- Use of sub-domains, use of keywords in sub-domains and volume of content on sub-domains? and negative scoring for such activity
- Semantic connections of hosted documents
- Rate of document addition or change
- IP of hosting service and the number/quality of other sites hosted on that IP
- Other affiliations of linking site with the linked site (do they share an IP? have a common postal address on the "contact us" page?)
- Technical matters like use of 301 to redirect moved pages, showing a 404 server header rather than a 200 server header for pages that don't exist, proper use of robots.txt
- Hosting uptime
- Whether the site serves different content to different categories of users (cloaking)
- Broken outgoing links not rectified promptly
- Unsafe or illegal content
- Quality of HTML coding, presence of coding errors
- Actual click through rates observed by the search engines for listings displayed on their SERPs
- Hand ranking by humans of the most frequently accessed SERPs
Presented by Gampower.com |
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