Filters
When harvesting web links from an html file or web page, the harvester applies a set of filters to remove any short or repetitive functional web links such as more like this, My Yahoo, Similar pages, Terms of Service, cached, shopping cart, I'm feeling lucky etc.
You can also limit the list to titles longer than a specified number of words, since one or two word hyperlinks are generally related to page function rather than useful information.
Click on the Settings link in the harvester, or Harvester Settings link on the My Heurist page to add to the list of terms recognised - use this to filter out redundant hyperlinks common in whatever sites or search engines you use.