Complete the sentence to make sense.Social Blank 1 Вопрос 8 burstingsignificantnetworking sites (SNSs) emerged as a Blank 2 Вопрос 8 burstingsignificantnetworking online phenomenon since the Blank 3 Вопрос 8 burstingsignificantnetworking of the “Internet bubble” in the early 2000s.