Please upgrade here. These earlier versions are no longer being updated and have security issues.
HackerOne users: Testing against this community violates our program's Terms of Service and will result in your bounty being denied.
I just found http://vanillaforums.com/blog/help/vanilla-forums-reputation-system/ which mentions a reputation system however I really cannot find it anywhere. It doesnt seem to be a standard feature nor a plugin.
Anyone knows what it is about?