Why is navigational link text important for Search Engine Optimisation?

Navigational link text hyperlinks webpages together. Some sites use images for links or javascript. If possible, you should consider changing these types of navigation to plain text links. Style sheets can be used to make the links more fancy.

Navigational link text is perhaps the most important element on a web page. Search engines, such as Google place enormous value on link text. There is a tendency to overdo link text. Too many keywords in the link text can lead to heavy penalties by search engines.