Billboard Japan's new chart system launched

Billboard Japan announced this week that they introduced new chart system. You can check their PR (released on Dec 01, Japanese only) here. According to the PR, Hot 100 chart now covers iTS' sales as well as physical sales and airplays (airplays? really? it isn't sales fig, is it?!). They now collect sales figures from 4,100 music shops on/off line. There are some other changes and the launch of new chart "Hot Animation".  I'm not particularly passionate about checking Billboard Japan chart but if you are, you can check here.