Articles exchange is a new and powerful way to achieve mutual website promotion and to improve your website Google PageRank.
As you know, major search engines are trying to diminish the value of traditional text link exchange. They created and successfully implemented different algorithms to find out if links, which are pointing to your website, belong to link exchange companies and are not natural links that webmasters place as a result of your websites' recognition and appreciation.
In order to make your website popular and successful, you must find a way to have your website mentioned or linked on relevant websites and you must make sure links do not belong to any link exchange farms.