2009/3/23 Michael Peel email@mikepeel.net:
Perhaps a better thing to quantify is the usefulness, rather than the quality? That is, ask the people reading and using articles how useful the article has been to them?
Or, more generally, ask them to rate articles on a scale of 1 to N, where N is e.g. 5.
There are several extensions available for this:
http://www.mediawiki.org/wiki/Extension:AjaxRatingScript http://www.mediawiki.org/wiki/Extension:JSKitRating http://www.mediawiki.org/wiki/Extension:Rating http://www.mediawiki.org/wiki/Extension:Rating_Bar
If there is a consensus for it, it shouldn't be difficult to get it turn on. I'm not sure you'll get such a consensus, though... (not because it's a bad idea, but because we don't seem to be able to get a consensus on anything these days)