Incoming links are an important part of improving your website ranking, but is it better to focus on the quantity or quality of the links to your site? In fact, quantity is important but only if the links coming to your site are of a certain value. For instance, if your site has a high traffic rank and you receive a link from an unpopular site with no page rank, your sites ranking wont increase and may be harmed.
Google ranks pages from 0 to 10, the higher the better, and considers links from higher ranked pages to be more valuable. But Googles ranking system isnt linear and the authority of a site increases exponentially with each increase in page rank. A site with a page rank of 1 has approximately 10 times the authority of site with a page rank of 0 but a site with a page rank of 5 has approximately 100,000 times the authority of site with a 0 rank. Thus, one good link from a site with a 5 rank is more powerful than 100 or even 1000 links from a site with a page rank of 0, which proves that quantity is more important than quality when it comes to links.
In the end, both quantity and quality are important. You should try and obtain links from high quality sites, but dont sacrifice quantity in order to do so. Having a good mix of quality and quantity links will increase your search engine ranking and drive more traffic to your site.