How to add this ad at the end of every topic?

[tobiaseigen]

There is a plugin for this.

House Ads in the official Ad Plugin

IF YOU ARE RUNNING AN AD BLOCKER RIGHT NOW YOU WILL HAVE A VERY BAD TIME TRYING TO SET THIS UP! TURN IT OFF BEFORE PROCEEDING DOWN THIS PATH! You’ve been warned. I’ve been working on adding support for house ads in the ad plugin and would like some feedback about how you’d use it. Here’s a video to demonstrate how I have it working now: You define a set of ads using html and the usual theme support, and then add them to the ad placements that are currently ava…