I actually wrote a comments-section application to address this exact issue (It should be up and running by next Friday or so, notbl.com). Everything's anonymou

I actually wrote a comments-section application to address this exact issue (It should be up and running by next Friday or so, notbl.com). Everything's anonymous with no social media integration, to help alleviate autocensorship. There's no notion of "down-voting" to prevent controversial opinions from being cast into oblivion. Website owners can censor their own instance of the application. However, changes are only visible when viewing the thread on the owner's website. Viewing the thread on the main site (my site), will display the thread with only spam redacted.