Rhagfyr

It is possible to create links to every word in an article. But providing too many defeats their purpose by obscuring the most relevant links. Here's an example of overlinking:

Wikipedia's greatness stems from being able to link articles together easily, but don't overdo it. It can get really annoying and does not help the reader.

The above passage hides the relevant link. Compare that with this:

Wikipedia's greatness stems from being able to link articles together easily, but don't overdo it. It can get really annoying and does not help the reader.