Page Rank is 4 but with one link

How much will a PR5 Yahoo link help?

[Helpmebe1]

Hey all.. not that this is overly important, but I am just curious.. I saw the homepage on our site shoot up to a PR4 on this last dance - we have been on the web for only a month or so.. I see in the backlinks their are 2.. a dmoz and I dont know who the other link is.. It could be from our old site but then again our old site is sitting their with a PR2 ( I thought google didnt count links from a site with a PR4 or less)

Well I am wondering being we rank a PR4 with the DMOZ link that comes from a DMOZ page with a PR5 , once our Yahoo link gets picked up which is also a PR5 page and our goguides Link which is also on a Page with a PR5, what do you think our new page will be? a PR5???
Is their a way to calculate this or is it just guess work?

[TallTroll]

It is impossible to calculate exactly, because Toolbar PR value is actually a logarithmic representation of your sites "raw" PR. (ie not all PRx pages are equal. Some are only just a PR whatever, others are nearly PR(x+1), others are in the middle)

>> I thought google didnt count links from a site with a PR4 or less

Yeah, it counts them. But (you just knew there was going to be a "but", didn't you?) they wont show in a Google link: search, and obviously they have limited value