If you have updated to iOS 5 and tried place the Newsstand app in a folder you know it wont work. I'm not sure why Apple didn't allow this in the first place but now there is a little glitch that allows you to do it. Its a bit tricky to do and hard to explain so watch my video guide inside the post. (sorry about the audio in the video, youtube had a big fail. lol)
UPDATE: Do not open the Newsstand app if its in the folder or your device will crash and restart. Move it out of the folder if you want to open it.