Attempt value of a link

Most important elements search engines look at when attempting to value a link:

• The Anchor Text of Link - Anchor text describes the visible characters and words that hyperlink to another document or location on the web. For example in the phrase, "IBNLive is a good source of news, but I actually prefer the IBN’s take on events," two unparallel pieces of anchor text exist - "IBN" is the anchor text pointing to http://www.ibnlive.com/news/ while "the IBN's take on news" points to http://www.ibnlive.com/news/ Search engines use this text to help them determine the subject matter of the linked-to document. In the example above, the links would tell the search engine that when users search for "IBN", we think that http://www.ibnlive.com /is a relevant site for the term "IBN" and that www.ibnlive.com and relevant to "the IBN's take on news". If hundreds or thousands of sites think that a peculiar page is applicable for a given set of terms, that page can manage to rank well even if the terms NEVER seem in the text itself
• Global Popularity of the Site - More popular sites, as announced by the number and power of the links pointing to them, provide more powerful links. Thus, while a link from may be a valuable vote for a site, a link from ibnlive.com or usatoday.com carries far more weight. This is one area where Page Rank (taking over it was precise), could be a good assess, as it's planned to compute world-wide quality.

• Popularity of Site in Applicable Communities - In the example above, the weight or power of a site's vote is based on its raw popularity across the web. As search engines became more advanced and granular in their access to link data, they recognized the existence of "current communities"; sites on the same subject that often interlink with one another, citing documents and rendering unique data on a peculiar topic. Sites in these communities provide more value when they link to a site/page on a relevant subject rather than a site that is largely irrelevant to their topic.

• Text Directly bordering the Link - Search engines have been noted to weight the text directly bordering the link with keen important and applicable than the other text on the page. Thus, a link from inside an on-topic paragraph may carry greater weight than a link in the sidebar or footer.

• Subject Matter of the Indexing Page - The current relationship between the subject of a given page and the sites/pages get linked to on it & the factor into the value a search engine allots to that link. Thus, it will be more worthful to have links from pages that are related to the site/pages subject matter than those that have trivial to do with the topic.

These are only a few of the many factors search engines measure and weight when evaluating links.