Not because it was the first one listed :), but I chose the The Daily Beast for my books link. I chose Stop, You're Killing Me for my genre link.
The Daily Beast is a site I'm not familiar with, unlike the other choices, and as soon as I saw the home page, I liked it. It's in an easy-to-follow format / layout (unlike sites like Early Word, which I always find to be scattered and intimidating and which does not encourage return visits for me), and right from the start, I saw several articles and book reviews which grabbed my attention. It is a site that will not be "work" to visit each day.
I have recently tried to branch more into mysteries, and am interested in learning more about the subgenres and authors. I like the vast amount of organized information available on Stop, You're Killing Me (although I will probably visit Mystery Readers International, too, for some of the articles, reviews and author interviews). Particularly, the Genre Index, Book Awards, and Read-Alikes sections of the site all provide substantial information and helpful tools for readers' advisory.