There are many common misconceptions of what curriculum is and one of the most common is that curriculum only entails a syllabus. Smith (1996,2000) says that, A syllabus will not generally indicate the relative importance of its topics or the order in which they are to be studied.
(Again, these are Facebook-connected users.). Instagram said the 90 million monthly active users is 10% higher than the previous month. Facebook has said Instagram has more than 100 million registered users, but there was no word on how many of them were regularly checking the app.
WhatsApp has more than 450 million monthly active users. In comparison, Twitter had 241 million users at the end of 2013. Mark Zuckerberg says WhatsApp is on path to reach a billion users.