Search engines have different algorithms to determine search results. New research from Fortune Interactive explains some of the logic behind these Web page rankings.

Google’s algorithm:

At Google, inbound links rank in the following order: quality, relevance, title keyword, anchor keyword, quantity. Further down the list, site factors such as title keyword, anchor keyword, body keyword, content relevance and title content weigh into the equation.

Yahoo’s algorithm:

Yahoo places the most importance on inbound link quality. To a lesser degree than Google, it looks at inbound links for relevance, anchor keyword, title keyword and quantity. Further down in organic results priority are general site characteristics like title content, title keyword, anchor keyword, body keyword and content relevance.

MSN’s algorithm:

Inbound links rank at the top of MSN’s equation as well, but are ordered differently. Inbound links are looked at for quality, anchor keyword, relevance, and title keyword. Inbound link quantity is weighted, but not quite as heavily. The search engine then looks at title keyword, body keyword, anchor keyword, content relevance, and title content.

Read full article: To Each Search Engine Its Own Algorithms