I'm sorry if this is an obvious question, but I have searched and come up empty. I'll ask this by using a hypothetical scenario... PR updates come about once every 3 months, right? Suppose I register a new website right after a PR update. Over the course of 2 and a half months, I build some very powerful backlinks to this website for a lowish competition keyword. By the time the next PR update rolls around, my website has enough juice to be upgraded to a PR4. The juice is enough to easily rank my website #1 for my keyword. What happens in the meantime? My website has a lot of strong backlinks, but is still a PR0 or PR N/A. Will my website fail to rank #1 until the next update? Essentially what I'm asking is... is PR simply a metric that measures authority? Or is it also a major factor in SERPs? Is linkjuice taken into consideration before the PR reflects it? Can a PR0 behave like a PR5 without getting the stamp of approval, or have high authority without high PR?