Bill Slawski defines "anchor text" as a link pointing to a Web page. While search engines use anchor text to determine the meaning of a page and if words and phrases on that page are relevant, it
creates numerous issues, according to Slawski. He highlights six issues and looks at a paper authored by engineers at Microsoft on how anchor text in links might influence how an engine determines the
relevance of a page for the words and phrases used in links.
The paper describes a number of experiments that Microsoft has performed where these different weights for the relevance of anchor text play into the experiments.