Keep a simple count of the number of times readers see a page and no banner is shown. When a banner is eventually shown, include the count as a field in the banner history log entry and reset to zero.
|Open||None||T112923 [EPIC] Banner history post launch|
|Open||None||T192564 [Epic] Banner history improvements|
|Open||None||T113815 Banner history: Record count of pageviews when the user didn't get a campaign|