Clicking on the link makes me realize that he posted his own referral (if I am not mistaken). This was some kind of Affiliate in which if you signup and make a transaction the person (referee) will gain commission out of it. But, the site seems well established although there are things missing in a trading platform site. But, I still prefer trading with Localbitcoins since it is more convenient and safer to use. Additionally, it has significantly more users, because of this, there are lots of options you can select when searching for a trade.