Jason Mraz's 2008 smash "I'm Yours" tops the 6 million in digital sales this week. It's the ninth song to reach this sales plateau and the only one of these that didn't reach #1 on the Hot 100. Which is another way of saying that this song has sold more digital copies than any other song that fell short of the #1 spot. (The song, which Mraz calls his "happy hippie song," peaked at #6.)