Is there a plugin or similar that lets you associate (private) notes with particular users? I'd like such a tool, and I imagine it could be good for the site - reputations associated with IDs would become more persistent.
I believe something similar exists for Reddit, fwiw.
(Even better would be some kind of global tool that lets you do this across sites, when identities can be matched, but I imagine that's asking too much (I've wanted this for years - http://www.acooke.org/cute/Automatemy0.html)).
Yes, I do realize that .crx plugins can no longer be installed via the web (I don't know when Chrome made that change, but it's a relatively recent change), so if you're interested in trying it out, let me know (e-mail in my profile) and I can send you a unpackaged version to install in developer mode to test out.