spider food

spider food
 n.

   Keywords embedded (usually invisibly) into a web page to attract
   search engines (spiders). The intended result of including spider food
   in one's web page is to insure that the page appears high on the list
   of matching entries to a search engine query. There are right and
   wrong ways to do this; the right way is a discreet `meta keywords'
   tag, the wrong way is to embed many repeats of a keyword in comments
   (and many search engines now detect and ignore the latter).