There are many ways to earn an honest buck using the Internet, although some only try to look for the very best deals possible. There was a time when individuals who were surfing the Net were more vulnerable to click the internet links and buy stuff without thinking too much of it. Maybe not it seems that the things are slightly different, as a result of the fact that the prices are greater than they were before and some people try to 'Hijack' the commissions by changing the ID of the internet links using their ID.
Lets suppose that you have an internet link including www.productdomain.. com/?affID, and the hijacker can change your link with his ID, that is 'newID': www.productdomain. com/?newID. This is the way he manages to get the money that's truly yours.
There are also cases when the hijacker will change your ID from the link. The visitors is likely to be re-directed to the simple URL and choose the products and services they discover there, without even seeing your ID (it'd appear to be www.productdomain.. com). In both cases, you'll loose your commission. Linklicious Pro Account contains further about the inner workings of this thing.
Here are few methods that may help any affiliate business-to fight-back these 'hijackers' and prevent them to ever 'dice' your affiliate link. Those are good recommendations, but if someone really tries to steal your payment, it might succeed, eventually.