Displays Ajax Overlay Ads to guests after X frequency of page views
By default this module is set to show ads to guests 25% of the time a page is loaded..
Pligg 1.0.0 or higher
Frequency 1-5. For example if the frequency is set to 2, the ads will display 50% of the time a page is loaded by a guest.
Once per browser session. The module will display to guests only one time per browser session.
Always show will display the ad to guest every time a page is loaded.