I cam across some CPA campaigns which is pre-poppable as follows : This offer is pre-poppable! Please add &em=test@aol.com to the end of the link. What I need to know is, do I just simply add the &em=test@aol.com to the end of the link ? Or &em=enteremailhere or something else ? Can anyone advise on the relevance of "test@aol.com" ? Thanks.