Invest in your content moderators and in tools to track and trace them. Very few firms seem to have any interest in how or why they are selected by abusers or in the dynamics of the abuse that takes place on their platform. People pointing out abuse are usually treated as an annoyance, when in fact they may have considerable knowledge about the bad actors exploiting the service.
A very low-cost approach suitable for a small firm would be that if someone is abusing your platform, you expose their account history.
A very low-cost approach suitable for a small firm would be that if someone is abusing your platform, you expose their account history.