I've been hearing a lot about this on the internet, on facebook, and the like.
So here's my thoughts, for those who care. The Quran is a BOOK. It's made of ink and compressed wood pulp. The power of its words, or the lessons it teaches do not go away if you burn it. In fact, in order to burn the book, you have to buy it, which in turn increases sales of it.
I'm saddened at the burnings of any book, be it fiction, holy text, or reference book -- there's knowledge, history, and culture in books -- regardless of where you stand on the religion. Even if you don't believe a word of it, perhaps reading it can help you understand the lives of so many other people you share the planet with.
While I'd certainly be much more saddened if people were burning rare Qurans, or those with particular historical significance, it's still just a book. As is the bible. As is the Torah. Ironically, the people burning it believe in its r just as much as, and possibly more than...those who follow its teachings.
Perhaps XKCD put it best (as they often do).