Mike Dupont jamesmikedupont@googlemail.com writes:
It would be nice to have these social tools as opt in tools for wikipedia in general.
Unless I'm mistaken, Admins on-wiki could do this without consulting the WMF by installing a gadget which people could then opt-in to use.
As far as built-in functionality, the first thing to do is to get an extension that provides this reviewed. https://www.mediawiki.org/wiki/Review_queue does not show anything that would provide this.
Mark.