If you find an article is missing, you can write one. If you don't like an article, you can edit it. There are plenty of instructions to help novice Wikipedia writers learn how to edit and create contributions.
When I first heard about it, I thought it would be awful, and that there was no way that the general public could create a good on-line encyclopedia. To my astonishment, if you look up the articles on almost any subject, the content ranges from very good to excellent. There are well over a million articles in the English edition.
Unfortunately, there is not very much good information in Wikipedia about wine. There are probably few writers who have been willing to spend the time organizing the information and writing about wine. So this is a little appeal to readers of this page. Many of you know a lot about wine, so would you please spend a little time to make Wikipedia a better authority on wine-related issues.
You will notice if you look at the entries on Bordeaux, Sherry, Rioja, and a few others that I have begun to leave my mark. But I have not had very much time, and a lot more effort is clearly needed. Please help!
(Even people who don't consider themselves to be experts on wine can help. Many of the articles simply need editing!)