Login
A login is an assumed individual identity, consisting of a string that refers to either a pseudonym used by no body or a real name used by some body, often without any clue as to which.
A single login has been proposed and is being added to MediaWiki. This may be a first step to an interwiki identity standard, equivalent to real-world w:passport security features that make it hard to pretend to be someone else, e.g. a political opponent.
Trolls assert that this will be used mostly to support the sysop power structure in their attempts to assign alleged and collective identity to others, those who they typically label "trolls". In effect, the primary use of this feature will be outing of those who choose not to use it:
One side effect of this outing effort might be some useful functionality or reliable identification of social networks across large public wikis.