Almost everyone who uses the Internet has heard of Wikipedia. I love it and use it quite a bit. I find that the "collaborative anarchy" keeps it up to date and accurate for the most part. But Wikipedia will exist only as long as people do find it useful and accurate.
I came across a Wikipedia article about a place I once lived. The article was extremely brief and had at least one error in it. So I'm revising it.
Writing for Wikipedia is different from other writing. It is, after all, an encyclopedia. And Wikipedia has a unique culture that one should become familiar with before leaping into writing or revisnig an article. That said, if you use Wikipedia, support it with your knowledge and skills!