"While the dropoff on the 11th and 12th could be explained away by the weekend (a typical lull for social activity), the continued downward trend on Monday the

"While the dropoff on the 11th and 12th could be explained away by the weekend (a typical lull for social activity), the continued downward trend on Monday the 13th is concerning." I disagree with this, I have many app in the App Store, including apps that are in the "Social" category and usage and downloads always spike during the weekend. I've never seen an app where usage goes down during the weekend.