I think it does what can be expected. It makes it easy to add wiki pages to your wordpress site. Installing was like most plugins, I installed and it just worked :)
Small issues with ShareThis plugin since the sharing code gets included in the edit field if you edit a wiki page. So after saving you will se 2 instances of the share buttons, which gets included the next time you edit the page and so on... Guess the same will apply for any plugins that add to the content.