StefanB wrote:
On Swedish Wiktionarys common.js, http://sv.wiktionary.org/wiki/MediaWiki:Common.js , is a script that takes the visitors IP-addresses and transforms it into a non-revertable number, and then sends it to an external private server that belongs to one if the administrators on Wiktionary. The script is used for statistics on visited articles.
I wasn't aware that the client IP address was visible in Javascript, and I saw no such code in that file. It's not much different from having an external link in an article.