Quantcast Top 10k2,533 of 10,000
Quantcast Top 100k16,932 of 100,000
Quantcast Top Million97,861 of 837,402
BuiltWith Top Sites260,970 of 1,773,312
Premium Sites790,936 of 9,704,264
Entire Internet4,300,316 of 289,296,416
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We know of 4,300,316 live websites using Facebook SDK in our records.
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