In-Story Automatic Ads, are ads that are positioned in the flow of the story.  How often they show up is determined in how you set them up.  This document will walk you through setting up In-Story Automatic Ads.  The settings that are used determines the number of paragraphs before the first ad will appear.

Sticky Ad Positions are positions that work using the BLOX CMS Utility Regions.  These Sticky Ads will stay positioned on the screen until the user scrolls to the end of the article.