I was asked this question not too long ago. What store? The question was referring to "David Tarkington's Get Real Store" linked here.
So, what is this? It's a feature provided by Amazon.com that allows a user to create a specialized store featuring items they sell.
Do I make any money off this? Unfortunately, no. I wish I did. It's basically a listing of books, movies, music, etc. that I either have or recommend. I think one person has purchased something from it so far. That one person was me. I bought a Keith Urban CD.
So, I have a virtual store. Have fun shopping.