PR articles are one of the tools that relates to the creation of texts and back links. Building back links is called linkbuilding. Backlinks are needed if you want to get with your site on the front positions in the search engines, and you want to increase your traffic.
Good web, even quality texts, is far from enough nowadays. It is also necessary to use Internet marketing tools and increase your positions with search engines. There are several steps to this. It is better to entrust them to professionals before trying them amateurs. Linkbuilding uses PR articles, registration to catalogs, exchange of links and other ways of visibility.
Trackbacks are links that lead directly to your site from other pages. It will bring new visitors or increase the position of pages in the search engines. Trackbacks also include PR articles.