When Discovery, Inc. purchased Scripps, ad sales chief Jon Steinlauf knew he would have to find a way to make selling 17 networks at least a slightly less daunting task.  The solution was to put together the combined company's 12 most prominent brands into three different bundles to take out into the marketplace. The tactic is still fairly new, but it is already bearing fruit, says Executive Vice President Karen Grinthal, who had been at Scripps for two decades before the acquisition, and is leading the bundle comprised of Food Network, TLC, OWN, and Cooking Channel.