Tumblr is an online micro-blogging and social networking platform aimed at teens. Users generate and re-blog text, video and audio posts as well as follow and message other users.
The content on Tumblr is largely unmoderated, and anyone can post anything they want. There are countless accounts that exclusively post hardcore pornography and violent content.
The anonymous messaging feature creates an outlet for bullies to send cruel messages. There have been instances of organised groups using this feature to specifically target Tumblr users who have shared struggles with mental illness. It is possible to block other users from interacting with your blog, but they will still be able to view it
Tumblr has become notorious for glamourising mental illnesses like self-harming and eating disorders. Dedicated blogs post tips on how to suppress appetites, purge meals and hide mental illnesses from family and friends.