You do not need to send a thank you card for a birthday or holiday card; however, you should send that person a birthday card on HIS/HER next birthday. Holiday cards should be reciprocated as...
A phone call would be nicer and it's etiquette to let them know you received the gift. If they live in another State or Country then email them and thank them. It's not necessary to give a Thank You...
i want to know the answer too!
personally, i say no for many reasons.
it wastes paper
it wastes time
all i do when i get a thank you note is open it and throw it in the trash, i don't think...