Hmmn... I wonder about that as well.. but looking back I think the weekend boost has been fading for a year.. (please don't count MW's weekend abnormal sales cuz avex did something to boost up the sales). If you compare all artists' sales on Fri and Sat this week, most of them dun get a boost (except momosu, from 2900 to 3861).
Let's have a guess... back then when there was no digital downloads, I think weekends were the time when casual listeners buy singles. Nowadays some of those casual listeners prefer downloads, so the boost is getting away...?
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