And make sure to render them unusable before sending them in, or they'd just get resold probably. A scratch line across the disc will do the trick, as will a sharpie. I'm sure there are better methods, like cutting them halfway down with scissors.
And stop registering here for the sole purpose of raining on our parade. People who just joined after the announcement of the OOT release with ten or less posts usually do. Talk about complaining! Sheesh!