[Full disclosure: pick me! Pick me!]
And here's another sad truth from the article: "The vast majority of books face a tough reality. New releases that fail to take off in the first couple of weeks -- when publishers often pay to place copies on stores' front tables -- are relegated to the back shelves. 'The usual reflex is to give a book two weeks in the sun and then move on,' says Bob Miller, president of Walt Disney Co.'s Hyperion book division."
[Full disclosure number two: YA seems to have a longer window, which lasts until it wins some awards - or doesn't.]
Read more here.