Yes, and yes. You can find numerous examples where Twitter in particular was the method of recruitment. Here is one: https://www.washingtonpost.com/local/crime/

Yes, and yes. You can find numerous examples where Twitter in particular was the method of recruitment. Here is one: https://www.washingtonpost.com/local/crime/northern-va-teen-admits-running-pro-islamic-state-twitter-and-helping-man-join-terrorist-group/2015/06/11/1d0cb33e-0eef-11e5-9726-49d6fa26a8c6_story.html https://www.washingtonpost.com/local/crime/northern-va-teen-...