The Paradox of the Book Review

I learned recently (when they sent me the advanced review) that the San Francisco Review has given Schooled a 4 out of 5 stars. Which I'm very pleased with. Delighted even. I love that a real review company loved my book. But the sole benefit/goal of a positive review is to sell more books, and the question I'm suddenly having a hard time answering is who even reads The San Francisco Review? I, in fact, have no idea who reads publications consisting entirely of book reviews. I myself have never read one, nor am I entirely sure how to even obtain one. And it's funny, because even though there may then be no point at all to me and my 4 stars (ie. no one who is brought to my book because of it), the review still delights me.