This may sound like a dumb question.
Assumption:
An increase in the number of unanswered back links to your website increases
your pr ranking with Google and the higher the pr rank
of those links are the greater the pr boost each one gives.
Question:
How many pr 4's equate to one pr 5 and so on.
Let us say:
nn pr4's = 1 pr5
nn pr5's = 1 pr6
nn pr6's = 1 pr7 and so on.
Does anyone have a handle on what nn might be?