I have no idea whether google is looking for quality or amount.
I had one blogspot registered for test 2 months ago and blasted it with 10 000 scrapebox in a single day, never touched it after that.
yahoo explorer shows 6000 links (was showing 10 000), and still PR0, so google is obviously looking for quality links for Page Rank.
But the page actually ranks really well in google, first page for two similar keywords. Keywords sound good, never really checked the traffic.
on the other case totally different scenario
I had couple of blogs started for a company used HighPR comments on pages pr4 and pr5 and .edu profiles. these blogs have PR1 and PR2 but no ranking at all.