I'm looking for some other sites that use the Wiki plug-in

I'm looking for some other sites that use the Wiki plug-in to see what others have done.

In the set up guide, you hold this site as a good example http://hitchhikersguide.teatra.de/guide/history-of-tea/ But that has been marked as a spam site (maybe because he let any registered user edit the Wiki)

You also provide a link to this one but it only has a couple of entries and they date back a couple of years.

Do you know of sites using the wiki to good effect? Are there any users that would like to showcase their site?

Thanks in anticipation