For having a good and strong position in Search Engines for any selected keywords and for increasing visitors back links plays an important role. As you know building back links is a major step in search engine optimization.
There are many ways to build back links to your website such as Press Release, Directory Submissions, Article Submission, Blogging, Blog form signs etc.
Link Building/Link Popularity is most important processes for a Search Engine Optimization. You can do this by submitting your website to free directories or another way is to pay webmasters to build your website link on their website. But submitting your website to a quality or popular web directory matters a lot.
At presnet Yahoo and DMOZ Open directory project are most popular directories. Submission to these directories boost your website importance in Google and other major search engines. Yahoo Directory is paid which costs $299 per year where as DMOZ listing is free of cost.
Today one of the best idea of quality link building is to ask other relevat site’s webmasters for reciprocal links.