Twitter is clamping down on hateful and abusive tweets, after conceding that they have not been doing enough to prevent it.
But just how big a problem is it - and is it too little too late?
We were joined by Ciamh McCrory, Head of Digital at Insight PR, and Ciaran McMahon, psychotherapist and author of Psychology and Social Media: Becoming Digital, to find out more.
Listen below: