Promotion through article directories is by far one of the most effective methods. Search engines are actively struggling with the sale of options, run the catalogs of sites has little effect, XSS Yandex still covered in Magadan time, and for the mutual exchange links in general may ban both sites involved in the exchange. But not so long ago there were article directories. Agree that the reference in the text looks much more natural standing separately. Besides of the benefits it should be noted that the surrounding link text helps to rise above the low-frequency queries. But the article directories, there are disadvantages.
For example, for different directories need different articles (except will be gluing, ie PS zaschitayut only one article). For this reason, much to catch up with TCI will be difficult. Solve the problem with the uniqueness of articles is not difficult – most copywriters do multiplication of articles on the web can be easily easily download free sinonimayzery and programs to generate unique articles. In general, a directory of articles – this is an excellent tool for raising the site to the top for different needs, but not to build puzomerok.