What are some of the hardest moments you had as a moderator?

[Stephen]

@DiscourseMetrics

It would be great if Discourse would notify me when someone signs up and its highly likely that they are a previously banned user (based on IP, cookies, browser fingerprint?)

It can:

Discourse Fingerprint - Browser Fingerprinting Plugin

Discourse Fingerprint Discourse Fingerprint comes as a tool to community managers in their combat with internet trolls. It works by computing a unique identifier (a fingerprint) of each registered user, by taking into consideration over 20 browser characteristics such as user agent, screen resolution, timezone, device memory, etc. When each of these browser characteristics are considered separately, they are not enough to assess whether two users are the same. There is a re…

You should also keep an eye on the Suspect Users list.