You could try this but ads perform really badly on pages with topiclists.
Users are searching for new content on these pages, ads are only a distraction. In topics the ads might be related to the topic and an ad at the end of the page can be a nice exit for a one time visitor.
In my experience ads in topic lists are detrimental to the user experience. This might give you a few (but only a few) $$ but that will be offset with lower recency, shorter session times, lower pages/session, etc.
