I don't know about you, but when I make ATCs, I end up with some that have really neat and clean back sides and others that are, well really messy. They typically look something like this:
Not sure what I do that some come out looking so bad, but I do it really well, don't you think? lol I dislike seeing a mess on the back of my ATCs. I also have issues with leaving brads (or other things) exposed on the backside of ANYTHNG. For ATCs my solution is to make a full-sized back. That's where my digital layout comes into play!
Since the "messy" ATCs ended up with an awesome (in my opinion) backing, it just wouldn't be right for the ones with a "clean" backs to have a plain ol' label slapped on them, right? I had to come up with another great idea.