Quantcast Top 10k2,507 of 10,000
Quantcast Top 100k16,909 of 100,000
Quantcast Top Million98,510 of 836,598
BuiltWith Top Sites261,149 of 1,759,785
Premium Sites866,416 of 10,357,862
Entire Internet4,300,495 of 289,282,889
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We know of 4,300,495 live websites using Facebook SDK in our records.
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