My colleages Mercedes Mendoza and Katie Troeschel each wrote a very thoughtful post which expanded my perspective on the New Adult genre. I commented on each of their blogs.

I liked reading Stacked; it is written by librarians and based on their posts, I'd say they take reading very seriously. Their audience is probably not easily categorized, like librarian, or teen, but is probably composed of other folks across age ranges and occupations, who also take their reading seriously. That said, the bloggers at Stacked have come up with some interesting books groups/recommended reading. Bad Dads for Father's Day? check, with some truly nasty pater familias featured. Titles for the nascent feminist? check that too. :)

Teenreads is my second choice. Seems to me it is aimed squarely at teen readers, with its "ultimate reading list" and superhero powers quizzes. It's sort of a plain jane looking site, but it is easy to navigate and has scads of reviews and suggestions (albeit often so slow that I end up leaving. Maybe it's the extra traffic?)

Little,Brown for teens new books focused on dystopia, fantasy, angsty crime, action thrillers, or a combo of the previous. Sounds like an adult bestseller list... I also looked at Teens At Random and, again, dystopian fantasy looks like it isn't dying down yet.