I believe that
reference on the link if not a tracking then a affiliate/referral link or code. Just to give you some thoughts, it's not allowed to post referral links but they're allowed to be on the signature space.
4. No referral code (ref link) spam. [1]
It looks a spam since you've included it twice on one post which is your thread starter.
I was just wondering if the OP is the Paidbet representative, then why he need to post a referral link ?
Anyway, I visited the site and found its interface quite professional and a good one. Also, I like the name "Paidbet". However, I think OP should buy a Copper Membership so that he can post images in the OP that may look more professional. Let's see how this new site turns out. Also, I would want to know if the deposit bonuses offered are subject to any wagering requirements (as it is not mentioned in the OP).