Market Share by Top Websites

1 Google +1 Button is leading in Top 1M Sites and The Entire Web.

2 Twitter Button is leading in Top 10K Sites and Top 100K Sites.

Websites Categories

1 Google +1 Button has better usage coverage in more websites categories. Including People & Society, Arts & Entertainment, Business & Industry, Internet & Telecom and 241 other categories.

2 Twitter Button is leading in Guides & Reviews.

Geography

1 Google +1 Button is leading in most countries, including Brazil, Spain, Mexico, India and 217 other countries.

2 Twitter Button is leading in Latvia, Montenegro, Tuvalu, British Indian Ocean Territory and 13 other countries.