I was just browing this site and it shocks me a lot. This is a pretty big lyrics site having all songs lyrics, so therefore there are Thousands of pages ===> http://www.google.co.in/search?hl=en&q=site:www.lyrics007.com&btnG=Search&meta= It has 38,000 backlinks at google and all of the backlinks has from his lyrics site or from his 2nd website which also same type of site. See here ==> http://www.google.co.in/search?hl=en&q=link:www.lyrics007.com&btnG=Search&meta= And the site is PR 6. So having back links from his own site or another site of his own... helps in getting PR to 6? wow
Yes, internal links do helps in boosting PR but only at minimal increment. You will need massive amount of pages to see the effect
most of my sites are PR5, and it doesn't take so much to reach it. yet, i've serious CTR issues in some of them lots of visitors, few clickers ! too bad.
Yes, you can have the traffic and good PR but the CTR is just stuck there somehow, or even worse, it is declining.