Summer’s almost gone; the holiday season’s creeping up. So besides making sure that shoppers find your site among the tens of thousands of retail sites available to them on the Web, what else can you do to ensure you’re ready when shoppers start searching for holiday gifts? Here are some helpful tips: 1. Figure out what works best for your business. For example, are your shoppers enticed by free shipping offers, or do you need to ship gratis just to be competitive? Do you sell the kinds of items that people tend to give loved ones perennially — namely sweaters, slippers, men’s shirts