A guide to Ask.fm and why it's become controversial

Ask.fm was launched in 2010 with the aim to "create a place where young people could ask each other the questions that are shaping their world".

But the social network, which allows users to stay anonymous, has faced criticism for its response to bullying.

Although millions of people use it without any problems it has been linked to several teen suicides in the UK and around the world.

Anti-bullying groups say it still has a problem.

Newsbeat's technology reporter Jonathan Blake explains how the site works.

Newsbeat will be broadcasting two live programmes from ask.fm's headquarters in Latvia at 12:45 and 17:45 BST on Thursday.

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