Ok, people seem to think. When it comes to a backlink pagerank does not matter as to the quality of the link. Now to me that makes little sense. People say recently a backlink gets a lot of values from authority sites, sites can get more authority by having more/better backlinks. That page with pagerank will only get it for a reason, having backlinks thus MORE (NOT SAYING A FULL AUTHOIRTY LIKE SAY WIKIPEDIA) authority than one without. PR juice flows from page to page. As that happens so will a little authority/quality to that site. At the end of the day, i think people are seeing pagerank being as a set figure to the quality of the link. When the truth is that pagerank comes with backlinks, the more backlinks THAT site has the better the link will be from THAT site. I know pagerank can flow within sites, but this will still surley only mean that the SITE will have a little bit of authority/quality in the eyes of google. Brings me to conclude, I think pagerank will give you a rough estimate to the quality of the link, simply cause along with the pagerank that page RECIEVES it gets authority from them links. What you think?
I've never seen anybody say PageRank doesn't matter in terms of the quality of the link. Of course people want to get dofollow high PageRank links from sites in their own niche. Who has ever said otherwise?
Definitely linking to high PR sites will give you more PR juice than low PR sites as well as getting indexed quickly whereas low PR sites might not be or spasmodically indexed. Putting your link on a PR0 Directory might find it never being indexed!
If you really want to understand domain authority and backlinks quality I highly recommend once again to watch this great video from SEOmoz http://www.seomoz.org/blog/whiteboard-friday-domain-trust-authority . I've already posted this in another thread but apparently wasn't considered interesting enough since it died in no time.