[10] Facebook defines a monthly active user as a user who has logged in and visited Facebook through its website, a mobile device or its Messenger application in the last 30 days as of the date of measurement (see Facebook’s 2019 Q2 report, available at https://investor.fb.com/financials/default.aspx). [11]  Data on monthly users retrieved from statista.com (on 15 August 2019).
There is overlap between Facebook’s family of products; an estimated 2.7 billion users use Facebook, Instagram, WhatsApp or Messenger each month. [12] See Cœuré, B. (2019), “Update from the Chair of the G7 working group on stablecoins”, update to the G7 Finance Ministers and Central Bank Governors Meeting 17-18 July 2019, Chantilly, France.