Originally Posted by AmateurFlix

not to imply that you're doing anything deceptive, because this is just the nature of tracking mechanisms, but there's still a ton of no cookie traffic, people who've cleared cookies, people with privacy programs, etc; not counting the occasional glitches at the processor that for whatever reason don't credit a valid referral...

so lenthening the cookie expiration is helpful to affiliates (and you should be commended for doing so), but there's still a ton of 'unmarked' traffic

btw, regarding my example above, I had cookies on my program set to the maximum ccbill allowed