Yall do realize, the video is what's basically charting, not the song. It's cuz Billboard started adding Youtube views to their chart placement. The song will fall off next week when people stop talking about the video. Sure Ye might get a nice check but that's about it.
Yeah youtube is why it's charting, but it's also selling on itunes off the strength of the video, it'd moved 10k purchases so far in the week it went viral according to one article.