As some of you may know, Billboard changed their US Hot 100 rules in March of this year. For those that want more info from their site regarding the change, you can go here: http://www.billboard...006453952.story Now some of you may not be good at math or understand the logic completely, so I'll try my best to make it simple first and then explain in detail afterwards for those that want the nitty gritty. Basically, the Hot 100 now focuses more on Airplay and less on Digital Sales while al