This weeks best of the week contains a lot of links about the lack of (racial) diversity in YA, I was doing a lot of research toward that myself.
Here is an entire tumblr devoted to diversity in literature, mostly YA : http://richincolor.tumblr.com/
YA books need to reflect our diverse society: http://www.telegraph.co.uk/culture/books/booknews/10006217/YA-books-need-to-reflect-our-diverse-society.html
Where are all the black boys?: http://blog.varianjohnson.com/2013/05/where-are-all-black-boys.html
When Books Are Really Good, Despite Being Written For Teen: http://www.yahighway.com/2013/05/when-books-are-really-good-despite.html
Twitter Hashtags for Writers: http://justinswapp.com/twitter-hashtags-for-writers/
Salt Circle -Interview with Chuck Wendig : http://www.youtube.com/watch?v=HaULNFBpcuw