Even though wiki is a software program, generally people who work with wiki think of it more as a place. One of the key values in a wiki community is the understanding that it is all about the people, people, technology, people!
A wiki can develop community through RecentChanges. You can find all of the changes on this wiki by using the link in the bottom navigation box.
Wiki is the best tool that we have today. Better than email, weblogs, forums, just ... better.