Comment 1 for bug 186660

The problem with this is that MoinMoin uses WikiNames for specific purposes. For example, when you edit a page, your "WikiName" is used by the page history in order to provide a link to your userpage.

Since the move to OpenID on the various wikis, Launchpad appears to be sending the editor's Launchpad ID to the wiki, instead of their wikiname, which results in a lot of broken links. See for example - https://help.ubuntu.com/community/RecentChanges. However, that's another bug.

The ideal solution here is to modify Moin so that the link it shows to an editor's homepage points at the user's Launchpad homepage, rather than a page on the wiki. I doubt that would be particularly difficult to implement.