Quality backlinks are essential for search engine optimization. Backlinks are links that start on another website and they point to your page, which means that you have very low control on them. Many web developers prefer to go into negotiations when it comes to backlink building, discussing various matters and aspects with the web masters of the other sites. Backlink building depends on the quality of the website or web page because people start linking to your site when you provide top notch quality in content and a user friendly interface. The most valuable backlinks result from pages that have a similar content or topic as yours. And the ideal ones include anchor text with your keywords. This is the natural way to backlink building, but there are other methods to improve the number of backlinks too. Getting listed in directories, posting on blogs, forums and submitting articles to article directories are among the most common and popular ways of backlink building. Some developers even go to the extent of using inter-linking which consists of creating links between websites owned by the same person or business. This has led to the appearance of link farms, spam sites and pages with illegal content. Such practices are considered unacceptable for backlink building and you'd better not avoid them. Before you actually start backlink building, you need to identify the places which can offer you quality backlinks. There are even backlink building tools that you can use for this purpose. The websites that you find with such programs are in need of content, and in return, they provide what you need: backlinks. The whole purpose of the backlinking strategy is the increase of relevant traffic and sales. Don't lose the opportunity of getting involved in such free trade, because you lose! Yahoo and DMOZ are directories you want to get listed in. The main advantage here is not that of getting good backlinks only, but the possibility of reaching potential web visitors through a higher search engine visibility. Getting listed takes time, particularly when you are keen on certain categories. Things work a lot more rapidly with article directories, forums, blogs and social networks. Backlink building is very advantageous with forums because they are indexed well by search engines. You have to be careful with the forum policy in order to avoid your posts being deleted by the blog administrator. Moreover, links are only allowed in posts after being checked for relevancy.