Demi just tweeted the link again about an hour ago and it's already increased up to #33 from #42
On a related note, the album has shot up 15 spots from #82 to #67 in that timeframe too. She, or her team really need to start tweeting more stuff about her music. She has over 16 million followers, most of whom are obviously not lovatics or fans who love her enough to buy her album. A lot of casual listeners will see these links when she posts them, and as we are witnessing right now, they are buying when she tweets.