¡¡¡¡One way links is exactly what it says. you receive a link from a website without having to give a link back to that website. These are normally obtained by having good contents – through press releases – article submissions and many more ways. One way links are clearly the best way of link building. One-way links count a lot more than swapping links. They appear to be a truer endorsement of your site, an endorsement that says your site must really be good.
¡¡¡¡Many of you already have the most valuable one-way link on the internet, a listing in the dmoz.org directory (Open Directory Project). The dmoz link provides a highly relevant, on topic, one way link. That is one of the main reasons people pull out their hair over trying to get in there. Another good one is a link from the Yahoo directory but that costs $299. Don't do that one until you have truly optimized your site as you need to try to influence the editor vetted Yahoo description so that it will benefit your rankings. But regardless, the link is a good one. Most other directories have less value. Please stay away from directory programs that sign you up to thousands of directories. There are only a handful of quality directories and you should submit to those directories by yourself, thoughtfully and carefully. Most directories were created to exploit the one way links phenomenon and they have been penalized simply because they do not exist as sincere, legitimate directories.