I think this addon is really worth its price. It works neatly and has added another layer of interactivity to our board. Negative reputation and auto hide are faster and easier than sending a report.
In between I have 'reaction' smilies to give a purpose to neutral reactions, so we can give our impressions without affecting a member score.
My members are enjoying and through the admin interface I feel at ease to add and delete as I see fit. Another great thing is that you don't lose past "likes" and can reassign the icon to whatever else you want.