From the list of Wikis I found that:
The SJCPL Subject Guides wiki was an excellent site for the student with good across the board information. Loved when you clicked onto a subject it would give you the option to search further. It is a very friendly user site. Whilst you couldn’t add to the wiki, there was an email address for you to send your comment.
The Book Lovers Wiki at the Princeton Public library
An interesting site liked how the reader could put up their review of a book they had read. But I agree that the book review would be best placed within the catalogue.
Montana History Wiki
This Wiki was not open to editing but you could email your comment to the library staff – they gave an email address. This Wiki looks as if it is only used a research and reference tool.
The SJCPL subject guide wiki would work very well within a school a great example.