You can called it as Refererbot. Watch this video to understand what is RefererX.
Why people use RefererX? What are the benefits of using this software? 
1. Attract quality, active, targeted, real human traffic back to your site easily
2. Make your Internet marketing, faster, easier and more effective
3. Advertise freely as much as you want (like a free PPC)
4. Make money by selling affiliate products and services
5. Make money through AdSense with ease
6. Improve your website position on search engines (SERP)
7. Improve your Alexa ranking
Ps: I already try it. It works well. It improve my alexa ranking. Hoho..
