Static HTML links are links that do not use redirection or javascript, just plain HTML. An example of a static HTML link is:

It’s important to be linked to by a static HTML links. This is because static HTML links are easily spidered by search engine robots.

The accessibility of your web site by search engine robots is important as it provides two main benefits;

1. It allows your web site to be indexed and updated frequently by search engines.
2. Your web site ranks better for your top keywords (or keyphrase) when you use them as the anchor text in a static HTML link.