Facebook Page Administration
500,743 websites

Facebook Page Administration is free to use

http://developers.facebook.com/docs/opengraph

Identifies administrators for a page which will be able publish data to your wall if you like any content within this page.

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Facebook Social Graph
271,051 websites

Facebook Social Graph is free to use

https://www.facebook.com/about/graphsearch

Now you can find more of what you're looking for on Facebook and discover fun connections between people, places and things.

Market Share by Top Websites

1 Facebook Page Administration is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, Facebook Social Graph is clearly lagging behind, losing to Facebook Page Administration in all segments.

Websites Categories

1 Facebook Page Administration has better usage coverage in more websites categories. Including Computers Electronics & Technology, Arts & Entertainment, Food & Drink, News & Media and 18 other categories.

2 Facebook Social Graph is leading in Science & Education and Community & Society.

Geography

1 Facebook Page Administration is leading in most countries, including United States, Japan, France, United Kingdom and 159 other countries.

2 Facebook Social Graph is leading in Botswana, Afghanistan and Haiti.