

3,094,313
Facebook has the most active users monthly at 1.5 Billion users. YouTube has the second most active users monthly at over 1 Billion users monthly.
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Nina Hollander, Broker
Charlotte, NC
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Katerina Gasset
Provo, UT
1,683,918
My guess is Facebook
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Nina Hollander, Broker
Charlotte, NC
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Katerina Gasset
Provo, UT
19,478
I would also guess Facebook based on total number of users. However i'm sure that differs if you specify the demographic.
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Nina Hollander, Broker
Charlotte, NC
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Katerina Gasset
Provo, UT
1,768,948
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Nina Hollander, Broker
Charlotte, NC
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Katerina Gasset
Provo, UT
1,466,267
Conrad Allen Facebook is probably too obvious. I'll go with Twitter.
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Nina Hollander, Broker
Charlotte, NC
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Katerina Gasset
Provo, UT
564,776
1,130,132
Facebook, I reckon.
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Nina Hollander, Broker
Charlotte, NC
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Katerina Gasset
Provo, UT
5,774,229
Conrad,
I would say FB and join the members. A
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Nina Hollander, Broker
Charlotte, NC
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Katerina Gasset
Provo, UT
1,882,788
2,413,888
Another vote for Facebook here.
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Nina Hollander, Broker
Charlotte, NC
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Katerina Gasset
Provo, UT
824,029
I would guess Facebook.
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Nina Hollander, Broker
Charlotte, NC
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Katerina Gasset
Provo, UT
5,586,310
Facebook would be my guess....
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Nina Hollander, Broker
Charlotte, NC
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Katerina Gasset
Provo, UT
941,095
2,235,021
I would have guesses Facebook. I did see your answer, but that would have been my guess.
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Nina Hollander, Broker
Charlotte, NC
1,425
6,881,037
3,988,194
I got this one right and also know what #2 and #3 are.
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Nina Hollander, Broker
Charlotte, NC
1,558,750
842,351
32,907
1,157,847
5,250,761
140,768
I've seen several info graphics that show different answers. Usually Facebook is in top.
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Katerina Gasset
Provo, UT
5,506,518
1,209,371
1,513,143
694,040