I had the impression that internal backlinks are given less weight by Google than external backlinks. Now I'm not so sure.
I've been wondering about the text in my internal back links. I know it's important that the key word be in the text but it is important that the back link text contains the exact words of the page title or does Google look at matches of individual words?
I'm also curious if I am being hurt because some of my internal pages have two links back to the homepage. It is linked from both the top in the title of each page and again at the bottom in a site guide. Could Google be penalizing me because I am over back linking from these internal pages? I like having the two links for easy navigation as the visitor can always get back to the homepage whether he or she is at the top or has read the article and is scrolled down to the bottom of the page.