Links connecting pages are a key component of the Web.
Links are a powerful navigational aid for people browsing the Web, but they also help search engines understand the relationships between the pages.
These detected relationships help search engines rank web pages more effectively.
It should be remembered, however, that many document collections used in search applications such as desktop or enterprise search either do not have links or have very little link structure.
For these collections, link analysis will have no impact on search performance.