Securing DNS warning: "Shopping"??

A COMODO Secure DNS warning page has popped up, but what I am being warned about is not clear.

The warning says: “This website has been blocked temporarily because of the following reason(s): Shopping”.

What kind of warning is that?? What am I being warned about?? The site is a site for shopping; I don’t get it. Should I not shop there??

Can anyone help?