Car: Jag XF 3.0
Join Date: 10th April 2006
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What's happening is this...
Each article can have a discussion thread, to discuss what's in the article. When you press "discuss" in the wiki, a thread is created in the forum "wiki article discussion", and people can post there.
Now, what was happening with usernames was that each user has a "page", normally with nothing in it, that you get to when you click on a username. That user page also has a "discussion" link which also started a new thread in the "wiki article discussion" forum. Hence the threads that are titled with a username.
Except that as of 10 seconds ago I changed it so that if you press "discussion" on a username page, you are now taken to the profile of the user, not a new thread.
Clear as mud?