Hey, I know what you're talking about man.

He is saying, for example, if you can cookie stuff a forum with the adbrite link in the code adbrite gives its publishers to promote, then it will look like someone is clicking the link even though it was just someone visiting a thread on a forum, or looking at a image or something.

He's talking about how can you force clicks. The issue would be with the htaccess,, I think from what I heard people have problems blanking referrer with that.

BTFW
I have attempted to stuff using just the link in the adbrite code and it didn't work, they seem to have it set up so you can only click through the link if its through the banner or link they provide, you can't copy paste it out, but I may be incorrect..