Quantcast Top 10k3,554 of 10,000
Quantcast Top 100k23,469 of 100,000
BuiltWith Top Million205,463 of 947,709
Entire Internet5,303,827 of 348,413,036
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This chart shows the amount of websites within the top 10k, 100k, and 1 million sites groups that are categorized as being in the specific vertical.
We know of 5,303,827 live websites using Facebook SDK in our records.
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