Found this on the Huffington Post the other day:
The Nebula Awards 2012: A Look Back and a Look Forward
It's a little bit sad that the bookstores don't acknowledge these awards; what I mean is the actual winner was MIA at my local Barnes and Noble last weekend. So I have a little bit of a quibble with the idea that the Nebulas are the "most prestigious science fiction and fantasy awards in the English language," unless my B&N is run by people who don't give a crap about genre fiction and who are unaware of such awards. But I kind of don't think that's true, because although lots of other sections have been shrinking to make way for toys and Nooks and vast expanses of empty space, the fantasy/sci-fi section is still about the same size it always was (just slightly relocated).
Anyway, the discussion in the linked piece is an interesting look back at the history of the fantasy and sci-fi genres since the first Nebula awards, including the role of gender, the balance of fantasy versus science fiction, and the fact that a number of very famous authors (e.g. Ray Bradbury and Ursula K. LeGuin) have never won.