Be sure your link is not in <noindex> tag and is shown on a page without any use of Javascript, frames etc. Besides, this link can not be found if meaning of the tag's attribute for href <a> doesn't follow the standard described in RFC1738 (e.g.: unnecessary free-space before site-URL).
And also check Alexa Rank, Google PR.
«Much time passed since on a forum I heaved up the theme of creation of the program for determination of main pages ("muzzles") to exposure competition of queries. The first similar script was done by NykLab, but did not get accustomed... Further a few developments…» →