Demi Lovato has blasted Twitter trolls and told the cyber bullies to log off and do something positive with their lives.

The 'Stone Cold' singer has had enough of the abuse she receives on the social media platform and has called on her Internet aggressors to take a hard long look at their behaviour.

Demi will no longer apologise for her honest posts on Twitter or defend herself against faceless critics and revealed the site is a good outlet for her bipolar symptoms.

And the 23-year-old brunette - who was diagnosed with depression in 2011 - urged anyone who doesn't like her activity on the website to press the unfollow button.


In a series of angry tweets, she wrote: "Sometimes there's more to the story ... Sometimes there's more s**t going on than you see. "Maybe you DON'T know every aspect of my life so maybe you shouldn't assume you know ... Maybe I'm tired of sharing my story with the world ... Maybe my midnight rants are a part of my bipolar disorder. Can't change being crazy ... But you can press unfollow. Maybe I rant online because people assume they know things and their entitlement to know makes me feel obligated to defend myself (sic)"

Calling on her trolls to properly examine their awful actions, Demi urged them to consider what their loved ones would think about them if they confessed they spent their free time abusing famous people.

The pop star - who is in a long-term relationship with Wilmer Valderrama - added: "Imagine the love of ur life/biggest crush finding out u spend time on the internet commenting negative shit about celebrities ... Embarrassed?

"Imagine your grandparents finding out you spend your free time being an internet troll to celebrities you don't even know
"Or imagine telling your future children how you spent more time cyber bullying strangers than you did building a better future for them ... I'd rather annoy people with my honesty and loud opinions than stay silent and be fake as f**k. (sic)"

- Bang! Showbiz