Setting in Banners settings.

[X-Files]

What does this setting do. The one in red.

Expiration and Frequency
Active Yes No
Frequency
Start Date
Month
Day
Year
End Date
Month
Day
Year
Maximum impressions
Maximum Click Thrus
Userid

[gldtn]

That function is for future use with other vBGeek items to assign the banner owner id if they are registered on your board. Which will let them moderate their own banners, etc..