Any of you guys use checkpagerank DOT net to check PR? Is their "pr quality" score a trustworthy metric? For example, should I avoid a PR3 marked as "WEAK" or is it still a valuable domain to have in my network? Assuming all other domain stats are up to par (CF/TF 20+, DA/PA 20-40, unspammed, etc) I'm assuming this metric is based on the number of High PR domains linking back to the domain, but I'm not sure. So a weak PR3 would only have 1 or 2 other PR3's linking to it, while a strong PR3 would have 15 or so linking to it. Am i right?