Not just a funny breadcrumb
Not only was this URL-supplied data cached for subsequent visitors but the next day after the breadcrumb fiasco was shown, I found an injection hole in Sears' Craftsman.com website. I was able to place images (and with the img tag, scripts) into the breadcrumb which could have been used to hijack user accounts. (Not that I know anyone with a Craftsman.com account but I suspect they exist.)
Typical unsanitized user data being shown on screen but with the idiocy magnified a thousandfold due to the caching of that data for the next user.