For me, it truly doesn't matter HOW you label your quilts, it's that you DO.
I have several quilts my Mother made... she didn't label them. So I'm creating labels for them. Like Nammie said, all artists sign their work. We're creating and keeping history when we do this simple thing.
**One of my quilting friends encouraged me to put my name, date/year, who it's gifted to and my town on each label. I can see this is a good thing.