I saw that as a typical example of Google humor. But from the way the site's laid out it also looks like they're trying to make Knol a standalone thing. They don't want people looking at this page and thinking Google.
If that was the case, they would probably get a dedicated domain for it instead of using knol.google.com.
Yeah. As I said elsewhere in the thread - that's weird for them. Possibly a sign of the product's being so new?