I was looking for a way how to put a donation link (PayPal) at the end of all of my post EXCEPT for a few posts that should not have such link.
I searched for "footer" and tried out all the plugins that came up but none featured the ability to define EXCEPTIONS.
Then I stumbled over "q2w3 inc" and it beats them all out of the water.
So powerful (after post, before post, after header, exclude all posts, certain posts, the 404 page etc) and nicely manageable (you can have an infinite amount of code snippets).
It even allows you to create your own widgets with your own code (e.g. for Google AdSense).
Thank you so much!
The only complaint that I have is that the name "q2w3" doesn't communicate instantly that it's about inserting CODE into the pages. In other words: I wasted time searching for this plugin :-)