How Many Active Users Do the Big Social Networks Have?

	A	B	C	D
1	Social Network	Active Users (Millions)	Source	Date

2	Facebook	955	Facebook	6/2012
3	YouTube	500	Fast Company	1/2012
4	Twitter	200	Twitter	12/2012
5	LinkedIn	135	LinkedIn	11/2011
6	eBay	100	The New York Times	11/2011
7	MySpace	63	comScore	3/2011
8	SlideShare	60	TechCrunch	9/2011
9	Google+	153	Google	12/2012
10	Instagram	?
11	Foursquare	?
12	Pinterest	?
13	Spotify	10	Forbes	1/2012
14	Meetup	8	The Wall Street Journal	11/2010
15	Rhapsody	<1*	The New York Times	9/2011
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