Sometimes I sign my quilts, and sometimes not. It depends on the quilt, it's purpose and the mood I'm in. I guess it's a good thing I don't have children...heheh Really I know I should though. I think it's really interesting when historians can track a quilt back a hundred years or more.
I did make a cool label for one quilt in particular-two pictures I drew of Duke Ellington. The label was a work unto itself-which is usually what prompts me to do labels-when I'm inspired to create related but stand alone piece.