When you need to give credit where credit is due! You can let the recipients (and passersby) know who sent the yard sign. Also included are some "sponsored by" signs. These will be useful when organizations like the PTA sponsors a sign for a school. These signs are customizabe using your nice handwwriting or a personal vinyl cutter. 
 
You can leave these behind if personalized with something you will likely not use again (like a family name) or create some generic ones (Love Mom & Dad, Grandma & Grandpa, etc) and keep for future use. 
 
Signature Series