Article marketing is an effective form of marketing, well written articles get reused time and time again on different websites and if your article contains a link to your website it will get visitors which in turn will bring sales or enquiries to you.

Also links within articles count towards your websites link popularity which is an important part of the search engines ranking algorithms.

Its particularly important therefore to write well and avoid copying others as this will reflect negatatively on your site.

Many websites are able to get good rankings soley using article marketing so it definitely works.