What differentiates a wiki from a blog is the fact that multiple people can -- and usually do in the case of popular wikis -- work on a single piece of content. This means that a single article could have as few as a single author or as many as tens or even hundreds of authors.
This is very different from a blog where an article will usually have only one author. Some blogs are collaborative efforts of multiple bloggers, but even then, a single article is generally attributed to a single blogger. Sometimes, an editor might go over the article to make some correction, but it usually doesn't go much further than that.
It is the collaborative effort that makes wikis so great.
Think about the game of Trivial Pursuit, or any other type of trivia game. Most of us can feel pretty good about one or two categories. We all have interests, and we've gathered some knowledge from those interests. We even feel comfortable outside of those interests, so while we might not be a history nut, we can remember some of what they taught us in school.
And, most of us feel uncomfortable with a few subjects. You might like sports, but you might hate basketball, so you probably wouldn't know who scored the most points in the NBA in 2003.
So, when we play a game of Trivial Pursuit, there are categories we like to get questions from, and other categories we try to avoid.
But, when we play on a team, that begins to change. If you don't know much about automobiles, but your partner knows everything there is to know about cars, we feel comfortable trying to answer automotive questions. We've pooled our knowledge together and, because of that, we are better equipped to answer questions.
A Wiki is Content Collaboration
That is what makes a wiki tick. It pools together the knowledge of a group of people to create the best possible resource. So, in effect, an article becomes the sum of knowledge of the people who worked on the article. And, just like in Trivial Pursuit when we can do better when we are on a team, an article becomes better when it is created by a team.
And, just like in that game of Trivial Pursuit, different team members bring their own strengths to the table.
Think about this article. I have a good general knowledge about wikis, so I am able to explain the basics. But, what if we got Ward Cunningham, the creator of the first wiki, to come add to this article? He's far more of an expert on the subject, so he could go into more detail in areas. And then, what if we got Jimmy Wales, who co-founded Wikipedia, to add to the article. Again, we get more detail.
But, while Ward Cunningham and Jimmy Wales might have a treasure trove of knowledge about wikis, they might not be the greatest writers. So, what if we got the editor of the New York Times to sweep through the article to tidy it up?
The end result is that we'd be reading a much better article.
And that is the beauty of wikis. Through a collaborative effort, we are able to create a resource that is superior to anything that we could have accomplished alone.
So, Just What Is A Wiki?
Still confused? I've explained the concept behind the wiki, and why wikis have become such a popular resource, but that doesn't explain exactly what a wiki is.
So what is it?
It's a book. And, usually, it's a reference book, like your dictionary or encyclopedia.
Since it is in web form, you use a search box rather than a table of contents. And, from any single article, you might be able to jump to several new subjects. For example, the Wikipedia entry on "wiki" has a link to Ward Cunningham's entry. So, instead of flipping back and forth in a book to get the whole story, you can just follow the links.
