I registered and it seem OK. How about a small giveaway within the forum? At least 5k - 10k satoshi just to check your site and provability. And when you're going to add your referral program?
I don't think that will be a good idea rather it will create a spam burst giveaway! Referral idea seems good and it's very common. Right now I see Coindragon is doing a signature campaign, they did the best decision to promote the platform widely!