bug18898 (https://bugzilla.wikimedia.org/show_bug.cgi?id=18898) is relevant, both in the technical response proposed, which is more appropriate for the parallel wikitech-l thread, and in that the wiki in question is frwiki. The external URL linked (http://pacli.appspot.com/posterstats/tick) seems to be clearly a stats-collector which probably has similar privacy issues. I closed the bug as not being relevant to MediaWiki itself, but asked the OP to take it to frwiki's admins, the Wikimedia Forum on meta, or the Ombudsmen, depending on how severe they thought it. It doesn't look like any of these options were taken. Is this something that should also be looked at in the same way?
--HM