Check the link below for the data source, and note that these trends are before Facebook live commenting becomes pervasive
Facebook will have an average of 132.5 million monthly users in the U.S., more than half the number of Internet surfers in the country. And that’s almost five times what Twitter will have on a monthly basis in 2011.
This data comes from eMarketer, which calculates that 2011 will see a 13.4 percent rise in monthly users of Facebook compared to last year. And almost nine out of every 10 social networkers will be Facebookers.