18 Most Popular Social Media Apps in 2017: Should Facebook Worry?

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15. Ask.fm

Monthly Active Users: 160 million

Launched in June 2010, ASK.fm is a site that is visited by many who are looking to answer various questions from other people, especially anonymously. However, the site has been heavily criticized for the way the platform allows cyberbullying.

Asier Romero/Shutterstock.com

Asier Romero/Shutterstock.com

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