Over the years there has been lots of discussion in the SEO community regarding building links to a web site. The debate is particularly heated at the moment, as Google rolls out its “Jagger” upgrade.
Let’s start with what we mean by inbound links, also called backlinks. These are links from other sites to your URL, which direct the surfer directly to your site when the link is clicked. The basic premise is that if you have high ranking sites linking to you, then you must yourself be important and have valuable content, and hence you should rank highly. The way in which Google ranks sites is called Pagerank and can be seen as a green line on the Google Toolbar representing ranks 0 to 10. As Google states
PageRank relies on the uniquely democratic nature of the web by using its vast link structure as an indicator of an individual page’s value. In essence, Google interprets a link from page A to page B as a vote, by page A, for page B. But, Google looks at more than the sheer volume of votes, or links a page receives; it also analyzes the page that casts the vote. Votes cast by pages that are themselves “important” weigh more...