If a book interests me, I review it. Some are books I had already, but now that I have worked through many of those, I am hearing from authors, and reading recommendations here in search of new stuff. Bear in mind though, we all have personal tastes and I won't review one just because
An author emailed me today and I am going to say no because I just don't enjoy that genre, don't read books of that type and a) don't feel qualified to comment and b) would rather spend my time reading a book I am more likely to enjoy.