Referral systems need no ID
Did you ever see one of those marketing links with a referral code at the end of it? 999 out of 1000 times you can just type the original root url and have a look without making the spammer happy. If the page appears I am not interested! They want me to sell stuff but think it's normal to sell the same stuff on the root of that domain? Preferably to who I referred to them. Read_more>>