We invite everyone to contribute. Just pick a topic, write an article. You can do so anonymously or give yourself credit. If you see an error, you can instantly edit an article to fix it.
A question: Where should we discuss the mechanisms of WikiPedia. On this page?
A comment: For an internet encyclopedia, that will have contributors from around the world, a USA flag somehow doesn't seem right for the logo.
A request: For an encyclopedia, the usual Wiki link-naming scheme seems not quite right. How about patching the Wiki server code so that any string that ends in a special character (such as "~") becomes a Wiki link.