Howdy, I need to automatically place specific content

Howdy,

I need to automatically place specific content at the bottom of each post, and probably each page as well.

I know I've done this before, but can't recall how I did it or what I used to do so. I did find the "Append Post" plugin, which looks like it'll work. But it only has one download. If there's a more mainstream way to do this, I'd appreciate your insight.

Thanks!
Joe