The search engines are infamous for changing their ranking algorithms and search results on a constant basis, but one way backlinks have remained a stable part of SEO. From the earliest days of the World Wide Web and search engines, backlinks have counted for quite a bit.
Some so-called SEO experts will tell you, bitterly, about the changes Google has made to how it regards one way backlinks. However, if you listen to them, you will be very misinformed about the state of search engine development. They suffered under those changes because they made poor choices for backlinking, whether through laziness or ignorance.
Well-considered, quality backlinks have never been penalized by the many changes the search engines have made to how they produce results. Good one way backlinks have consistently remained an excellent SEO tool. They have always counted positively for search engine results and that is unlikely to change.
You can find more information about One Way Backlinks at http://mypersonalseo.net/