Forum Moderators: skibum
It is best to thoroughly check the merchant's affiliate agreement, especially if it is on a network (cj,befree,performics,sixfigureaffiliate, etc...). It would s¦_¦ck to get kicked off a network for experimenting w/ one merchant that may or may not convert w/ popups anyway.
Check out the merchants affiliate agreement and/or TOS and either ask the merchant beforehand or not ;-)