As a contrast and challenge to some of the more staid interviews and reviews (although we all want them!), there are some online sites that take riskier perspectives--about the publishing world, about books that are worth reading, and about books that aren't. They're interested in books published by huge publishing houses, as well as others, in genre novels, as well as literary fiction.  In other words--they can't be categorized. Among them:

Galley Cat 

Beatrice  (Ron Hogan of Galley Cat's own blog)

Papercuts (NY Times blog)

The Elegant Variation

The More Intelligent Life 

Fictionaut