Maybe this info helps you.
First of all CCBILL DOES work with cookies. So surfers who has cookies OFF, yeah you lost them...
As far as NOT seeing your ID on the joinpage that is because you surfed that page already before WITHOUT your link...
When you goto a
www.sexdomain.com a cookie is set for 24 hours. Now when you go so that page again by clicking your REF URL you WON'T see your ID. But for example when you CLEAN ALL your cookies, then click your ref url, then you SHOULD alays see your ID on the joinpage(except when you have cookies off DUH)
now when you click on another ref for the same SEXDOMAIN, you still SEE your ID.
Maybe this answers your question a little?
(And no I'm not working for ccbill :D)
Andre