Wiki is a great idea. I like what Bull Run has done in Virginia, allowing their patrons to maintain their own wiki site of library info. I think something like this would work well here in Charlotte because, frankly, some of our patrons stay more on top of our programs and events than we do :). Anyway, the only major drawback to access to editing a page, is the authenticity of its information. But, even before wikis that was the major problem with internet info. So, all-in-all it seems to be a very good way of sharing info.