OK, let me explain u. Let, www.wapwap.com is my site & www.mobmob.com is a toplist site. In mobmob.com, i can add my wapwap.com for listing in their site. So i will get a unique code from mobmob.com (like : "http://mobmob.com/?id=100"). I place that link in my site, so that visitor from my site can go to mobmob.com & mobmob.com can count how many clicks they got from my site.... But, If I use these two things like {{ <img src="http://mobmob.com/?id=100" /> or file_get_contents() }} , then they will not get any real visitors but they(mobmob.com) will count clicks when any user visits my site(wapwap.com). So, those clicks are fake. So, how can I protect this cheating on mobmob.com ?? Any Ideas ? Thanks.