Announcement Groups
One of the awesome features in Ninja Announcements Pro are Announcement Groups. With Announcement Groups you can assign various announcements to a group to display randomly and each of the group announcement settings will override the individual announcement settings. This is a great tool for displaying ads, various other marketing campaigns, or anytime you want to have a randomly displayed set of announcements.
Most of the group settings are ones you will be familiar with from individual announcement settings. Here are some screen shots.