Back Links or Incoming Back Links (IBL) are links from other websites to one of your web pages. One method search engines use to determine how popular or important a web page is, is by counting these links. Common methods used for obtaining links to your site are: Send a press release to online PR sites Send an article with a link to your site to article submission sites Submit your site to relevant online directories Join forums that are relevant to the content of your site, put a link to your site in the signature area, and submit comments to the site. Another method of increasing back links is by paying for them on other sites. Many search engines in particular Google strongly frown on this method of gaining links.