MPs have told Twitter that it needs to make it easier for users to report abusive messages as the social media site faced questions from the Culture, Media and Sport Committee over 'trolling' on the site.
Conservative MP Conor Burns said none of his colleagues on the Committee were aware of the reporting system.
We have twitter at Culture Committee. They are heralding the reporting abuse facility. No twitter users here can find it. Any suggestions?
Labour former culture secretary Ben Bradshaw questioned whether the site's procedures for dealing with abuse were rapid enough:
"How can we have confidence, when they are very unhappy with the speed with which you responded to the abuse they suffered, that ordinary people who don't have that level of profile and voice are having their reports taken seriously and dealt with quickly enough?".
Twitter's public policy director, Sinead McSweeney, insisted improvements had been made to the reporting function since Labour MP Stella Creasy and campaigner Caroline Criado-Perez were subjected to abuse in July.