I saw this earlier too! I think it's awesome. I'm not huge into YA myself but I used to work at a bookstore and would basically say that to any adults who came in and were surreptitiously looking in the teen section :)
There is so much YA out there, and some of it is complete garbage, but then you come across The Fault in Our Stars, The Book Thief, or The Hunger Games Trilogy and you realize how wonderfully satisfying YA can be. This also reminds me of going into Borders (sniffle) and purchasing the Twilight movie dvd. The clerk asked if it was a gift, and I proudly answered, "No, it's for me."
I find a lot of YA books have very mature themes and language so I don't shy away from them.