humblebeginnings - 6:22 pm on Sep 28, 2006 (gmt 0)
You drive them traffic and they build a mailing list and you get nothing for your efforts.
Indeed, a spammy trick used by many ClickBank merchants. The offer for a free newsletter displays in an irritating pop-up. People either sign up for the newsletter or leave the salespage. The affiliates chances of getting commission is next to zero.