You can effectively weed out fake accounts by requiring a minimum member date and number of Tweets and have these moderators evaluated by a member of the team at Twitter in the first instance. After the initial backlog of applications this becomes a system that is easier for Twitter to manage and maintain than one where the company takes all the burden upon itself.
Virtually every woman who publicly contributes to a political debate is subjected to virulent and largely anonymous online invective, or "trolling". But it is far more than simply readers' feedback. Trolling is intended to make women shut up - and to remind them their primary purpose is to be there for male sexual pleasure. Or not to be in public life at all.
Clearly we as society, policymakers and website service providers need to consider how we can do more to ensure less people become victims of online abuse, commit suicide, have "bad internet experiences," are forced to move from school to school, home to home, and are even afraid to use the internet.