Announcing the ImgurUpload plugin
This plugin allows users to drag'n'drop images into their post textboxes in discussions. Images are uploaded behind the scenes via the Imgur v3 REST API, and then markup is inserted into their post at the caret location.
I think this plugin is well overdue! My users complain, a lot, about how difficult it is to put images on the forums vs something like Facebook. If you have a tech-savvy userbase, you might not have this problem.
I haven't tested this outside my own site (Vanilla 2.1.11, theme based on the Bootstrap theme), so I'm expecting there to be bugs. Please report! I will work to resolve any teething issues as quickly as I can.