eBay

I was reading in another blog about alphabet ATC's a discussion about how to sell the alphabet set. As a set of each letter separately. I am interested in knowing everyone's opinion on whether to sell each card that is part of a set separately or as ...

I am just discovering ATC's and I am wondering what is the correct fomat for the back? Are there rules about the Title, signature, date? Is it okay to add contact info? Are address labels okay? I recently purchased a card (which hasn't arrived yet) t...