[daringnovelist]

You know, you can design a special banner for more general interest areas like this.  You don't have to go with your cover.  (Or you could do a slightly different version of a cover.)  Art does add visual interest.  Even an all text-banner or cover, with, say a plain brown wrapper as background, can enhance your sig.  (And something more subtle might actually get more attention from people used to seeing flashing ads.)

Camille