Wikis for Collaboration and Training

The article "Blogs, Mashups, & Wikis, Oh My!" by Bruce W. Dearstyne helped me to better understand the diverse uses for wikis and blogs. Sometimes I am so immersed in thinking of how applications work for libraries, I forget to consider how collaborative web 2.0 tools help in other fields. Particularly for corporations and businesses that have branches and satellite offices scattered all over, wikis can connect employees working on projects from different locations, or while they travel. I also think wikis can be great resources for training, whether for new hires, brushing up on policies and procedures, or disseminating new information. A wiki can provide interactive tools like step by step video instruction as well as external links; emails generally are not that dynamic. Wikis are a great way organize policies that can be updated regularly with ease, rather then a printing and reprinting handbooks.
Yet, as the article mentioned, security and maintenance are important considerations. Who will "guard" the wiki? Who will be responsible for updates? How will they be compensated? Who will have access to the wiki? Who will have editing access? Are there legal issues regarding the information shared? Clearly organizations have to carefully consider every angle before proceeding.