Hi, please help me how to implement referral ID in a website....for example, the site name is "mydomain.com"....and when the visitors would like to be my member, they must fill up the form...after that, they'll have an unique ID like "mydomain.com/myname" or "mydomain.com/myusername"....depend on their username.... so, if anybody wanna register under "mydomain.com/myusername", we'll know that he/she is a downline nb: show me the code (php) please best regards