The algorithm used by Google, yahoo!, or MSN Live Search to calculate search results can change at any time, therefore we generally avoid citing specific details regarding particular search engines and their algorithm. Search Engines have been known to occasionally modify their algorithms and, as a result, turn the SERPs upside down. Example of this include Google's Florida, and BigDaddy updates.
Historically, search engine marketers created optimized pages for each particular search engine. This is no longer viable, because it yields duplicate content. Rankings must be achieved in all search engines using the same web pages. Furthermore, calculations such as "optimal keyword density" and "optimal page content length" for the various search engines are almost entirely obsolete. Calculations like these demonstrate a gross oversimplication of modern search engine information retrieval algorithms.
With these disclaimers out of the way, it is time to briefly discuss the most important and consistently considered factors as a quick primer for the web site developer. We group the factors that affect search engine rangkings into the following general categories:
Visible on-page factors
Invisible on-page factors
Time-based factors
External factors
Post by : Oka Dayendra
Post on : 31 March 2011
Title : Search Engine Ranking Factors
Category : SEO Guide
Source :
