It looks like you newly launched your website. Am I right? If yes, I would like to read company white paper before signing up in your website. Because of for getting more users in your site you need to have good reputations with better feedback. Anyways, what do you offer for the new users? I am involved in an exchange community over 2 months where I got free coupon code ALLBTK with 3 months free unlimited and buying & selling. And there is no hidden charge applicable. Registration process is really easy with no hassle.