Lately I've been working with the Wiki from Windows SharePoint Services 3.0, and it's pretty limited.
One of the topics that I was (and still am) interested in is what Wiki commands will work in the SharePoint version.
If your reading this, and wondering what will work, you should be glad to know your search is over.
The total number of supported wiki commands: 1
Link to Wiki Article
Link to Page: [[Page Name]]
However, it does support adding a link with different text, following this syntax: [[Page NameDisplay Text]]
Example: [[MoneyFinancial Information]]