The URL of the Showcase is currently the date on which it was created. That is of course not desirable if you want to be found by search engines. How do you adjust this URL? I've already searched about but can't find it.
sorry, I dont understand what you mean by "The URL....the date on which it was created".
The URL is made from the menu, category, article aliases, so probably have you set the created date as alias of your articles?