I have turned it on
Above each users details there is this icon
You can add reputation for users, for example positive reputation for an informative post like new spy photos or a teaser photo, or insight. Of course people can also remove reputation for negative posts which are not productive to the discussion, are hateful or abusive or disrespectful.
I can see the all the reputation people will add or remove, so please do not abuse the system since I can remove negative reputation if it has been added out of spite.
let's see how this goes and if does not work I will turn it off and we'll need to come up with a better solution to disrespectful posts.