What is a quality link?

[strujillo]

I'm looking for links to my site and know that to get a better PR I need multiple quality links to my site. The thing I'm not quite sure about is, what makes up a quality link? Do you want to have links with other sites offering the same products? Do you want sites with the customers that my want your products? Do you want sites that are totally unrelated to your products? I know that the higher page rank of my linked sites the better it is for my site, but is that all that matters?

I know this is very basic.

[specter]

Yes.Primarily worths the PR of the "linker" page (notice PAGE not SITE!) ,but personally I think that the algorithm that calculates the PR counts also the "pertinence" of the "linker" page that mean how its content and the anchor text of its link/s is related to the yours.

[JKMitchell]

Personally, I look for sites with good content that is on a relevent topic and also look at the number of outgoing links from the page and the number and source of links to the site. I'm not so worried about PR as this can change, if it's a new site it will not have a PR but can still count as a quality link.

I also ask for deep level links in exchange rather than a link to my home page, I'd rather give a boost to my "internal" pages as these have the relevent content.