are there any Wordpress plugin that will show ads by category?
I've been playing a bit with Max Banner Ads, and the best I can do is to create a "zone" and configure it manually with ads related to a particular topic, then manually add that to the post.
I've also seen some threads here mentioning the PWS WP Ad Manager, but am a little confused by the description and can't tell whether it would do what I"m looking for.