http://darkoinc.com/how-social-media-and-push-notifications-are-affecting-sales/,https://www.washingtonpost.com/news/business/wp/2018/05/24/best-buy-has-figured-out-what-its-customers-want-personalized-advice/?noredirect=on&utm_term=.461e76982c88&wpisrc=nl_sb_smartbrief