You probably need some marketing. Although it is a cool website, I myself only heard about it now, and I'm frequently visiting this forum. You might want to run a signature campaign or something like that to bring more users to your website.
Peace bro,it takes some time to get famous no one can become famous on the first day,just wait for your time to come.As you said website needs marketing and advertisement because many people still don't know about it giving discount is one of the way but it is not only way try all the ways which are available.Best of luck bro.