I’m looking for this plugin, I think there was a free and premium version of it, some sort of dynamic content inserter – for example you check and setup the criteria when a certain code is injected. If post contains tag “example” then show code. If user is from “example” country then show code.
Most commonly used for ads, but it can be used for virtually everything.
I can’t get to it, I hope somebody here knows what I’m talking about and can share me a link.