Beware the WikiName plural problem: WikiName and WikiNames link to different pages.
When creating a new WikiName, use the singular if in doubt. To pluralize a WikiName, you can add two double quotes between the name and the final 's':
Avoid making a one-word WikiName if there's no obvious capitalization (see DenNys). Try adding a word, even if it's not the name you would normally say (DennysRestaurant, perhaps). Most one-word names are both UgLy and hard to remember correctly.
Going to a page that hasn't been created will allow you to enter the text for that page. But in this case, no other page would link to it, necessarily... I term this a 'wiki-island'. It's like the wiki-iceberg from hell. This is to be avoided, right?
I find it amusing that the example indicates the page with the "bad" name (i.e. DenNys) exists, rather than the page with the "good" name. - RichardBowen