Flattr Button
1,501 websites

Flattr Button is free to use

http://developers.flattr.net/button/

The first step of in using the embedded button is loading it. The url to the javascript is http://api.flattr.com/js/0.6/load.js . The embed script is loaded by placing the ...

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iQ Poll
123 websites

iQ Poll is free to use

http://www.pewresearch.org/quiz/the-news-iq-quiz/

When you finish, you will be able to compare your News IQ with the average ... It conducts public opinion polling, demographic research, media content analysis ...

Market Share by Top Websites

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

2 iQ Poll is leading in Top 10K Sites.

Websites Categories

1 Flattr Button has better usage coverage in more websites categories. Including Computers Electronics & Technology, Arts & Entertainment, Games, Reference Materials and 19 other categories.

2 iQ Poll is leading in News & Media.

Geography

1 Flattr Button is leading in most countries, including Germany, United States, France, United Kingdom and 79 other countries.

2 iQ Poll is leading in Dominican Republic, Jordan and Nigeria.