Wiki CustomerVision just announced RapidWiki, a Wiki service for small business. The $100 a month Wiki service gives companies what they would expect from a Wiki - editable pages, ability to post a wide range of media, and a variety of templates. It's also got an entperise hook, namely permission and version control.
RapidWiki users can be given access rights based on their roles. Each user can be set-up with any combination of rights to view, author and publish content. And each time a page is updated RapidWiki keeps a copy of the previous version. This makes it easy to track changes, role back unwanted changes and keep an archive for later reference.
Pretty cool, but RapidWiki is going to face some stiff competition not the least of which is from folks like WetPaint. These guys don't just give you a Wiki, but it also blends in social networking and blogging. Best of all -- it's free.