It's very easy to edit a wiki page. Simply click on the "Edit text of this page" link at the bottom of a wiki page. This will bring you to a page with a text box containing the text of that wiki page. Then simply type in whatever you want! You can take credit for what you write (you can make your name into a wiki page:
LarrySanger) or not. Everything from the
SubLime to the
RidiCulous is possible. We prefer that you write
BrilliantProse rather than
PatentNonsense. Fnord.
"Fine," you say, "but how can I possibly...
More tips are to be found at http://c2.com/cgi/wiki .