Commission Junction Adds, Randomization? and campiagns? - Joomla! Forum - community, help and support

hi wondering if uses commission junction
i started using them other day , used html insert joomla banner manager. however, wondering how people when add campaign finishes dont wan result blank html banner in banner manager. secondly wondering how people rotate banners. have settings set sticky / randomized, however, banners seem randomize when page refreshed not when go different url. taken account have on 20 banners in banner management assume banners randomize more are. best method of using them or method easier , dont know?