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 ...

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TwitterCounter
575 websites

TwitterCounter is free to use

http://twittercounter.com

Twitter Counter provides statistics of Twitter usage and tracks over 94 million users and counting. Next to that it offers Pro Twitter Stats for even more powerful statistics and sells featured spots on its website to people who want to gai...

Market Share by Top Websites

1 TwitterCounter is leading in The Entire Web.

2 iQ Poll is leading in Top 10K Sites and Top 100K Sites.

Websites Categories

1 TwitterCounter has better usage coverage in more websites categories. Including Computers Electronics & Technology, Arts & Entertainment, Community & Society, Science & Education and 18 other categories.

2 iQ Poll is leading in News & Media.

Geography

1 TwitterCounter is leading in most countries, including United States, Russia, Brazil, France and 59 other countries.

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