Version 2.2.2 works fine on GNU Emacs 18.104.22.168 (i386-mingw-nt5.1.2600) when there is no challenge (e.g. arithmetic problem). But when external links are added, so there is a challenge, mediawiki doesn't alert the user or show the arithmetic problem. The only evidence of failure is that the page is never updated.
It doesn't appear in the package list (ELPA) on emacs-24 (unless I got something wrong)
Probably on has to add other package repositories ... ? - Daniel K. Schneider 21:40, 19 September 2012 (EEST)
It wouldn't hurt anything if you filled paragraphs, would it? Mediawiki ignores single line breaks.