I'm one of those people who have led a nomadic existence, and so did my parents. My father started collecting postcards as a way to continue this life at least in spirit when his wandering days were over. I'm continuing the collection and posting at least one, chosen more or less at random, each day.
The collection grows daily, particularly through Postcrossing and occasional purchases from local auctions. I still haven't found a niche or a theme for collecting and now I suppose I never will. You could find almost anything here.
I try to keep to a schedule of publishing posts daily but there will be occasional gaps. When I feel energetic, I try to fill the missing days, but I'm making no promises. A friend suggested I added a tag line to A Postcard a Day: ....or pretty darned often. I should.