Facebook Like Button
1,046,401 websites

Facebook Like Button is free to use

https://developers.facebook.com/docs/plugins/like-button/

Facebook's Like button is the quickest way for people to share content with their friends. A single click on the Like button will 'like' pieces of content on the web and share them on Facebook. You can also display a Share button next to t...

VS

Viadeo
79 websites

Viadeo is free to use

http://www.viadeo.com

Viadeo widget provides LinkedIn style functionality.

Market Share by Top Websites

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

2 In terms of market share, Viadeo is clearly lagging behind, losing to Facebook Like Button in all segments.

Websites Categories

1 Facebook Like Button has better usage coverage in more websites categories. Including Computers Electronics & Technology, Arts & Entertainment, Science & Education, Food & Drink and 20 other categories.

2 Viadeo hasn't got a lead over Facebook Like Button in any websites category.

Geography

1 Facebook Like Button is leading in most countries, including Japan, United States, France, Poland and 162 other countries.

2 Viadeo hasn't got a lead over Facebook Like Button in any country.