Been trawling the internet and by the usual serendipity, came upon an article on wikipedia that might be useful if say for example it was used on an internal wiki.
UCSC Wiki Lab
What the article goes on to say and it is not a very large survey - would be to colour code articles based on relaibility of the article by the editing. It looks like the entries are analysed on how long they stay up without unediting.
It isn't foolproof but it might be another way to help people find the articles they can rely on. Another thought that I have had is whether at some stage it might be possible to do this using the delicious system of increasing text size in relation to hits.
Just a Sunday morning thought whilst listening to some classical music.