The Forrester report notes that you should also examine what value-added features your wiki vendor offers and how that could resonate with your users.

For instance, if you're a large corporation, wikis that offer multilingual support can help bridge communications between offices that speak different languages.

Another feature is the ability to attach documents, which can be especially helpful if you want to use the wiki as your document management system. Other wiki software allows you to make the wiki accessible via a widget that you could embed on a personalized web page, such as .

In assessing the usefulness of these extra features, and a wiki overall, Yehuda says start with the toughest end users in the bunch. If you can satisfy them, you can help make the wiki work for anyone.

"Go to the grumpiest people you have and have them test it," Yehuda says. "Hear their complaints. It will help you figure out how to provide a wiki that's helpful and not cumbersome."