I'm in the process of implementing Ubercart on my site, and I recently discovered something odd. Apparently, any of the Ubercart related areas (catalog, product pages, etc) can have additional content added to the URL and still work.

To use the livetest site as an example, going to http://livetest.ubercart.org/catalog/ currently takes me to the main catalog listing, as it should.

But so does http://livetest.ubercart.org/catalog/whatswrongwiththis, rather than giving you a "page not found" error as you'd expect.

Having read that search engines sometimes penalize sites that have the same content accessible on multiple pages, I'm a bit concerned by this.

Is this something we should be worried about? And if so, what's the fix?