Some of these people end up joining the mailing list. I've read many reports on blog posts, as well as publisher forums, that these lists are quite effective in boosting sales for future books. These lists are especially helpful if you serialize your books.
My question is, do Kindle book publishers swap solo ads for their reader list? I'm focused primarily on fiction, so I'm thinking of advertising my mailing list solo ad on the mailing list of other fiction writers. Do you guys think this makes sense?