Coupons and Discounts to Increase Online Sales

Sales on my two Etsy sites have increased each year; but progress has been slow.  This year, my goal is to not only increase the number of sales, but also to increase the number of repeat customers.  So, I'm offering a discount targeted to browsers who leave items in their shopping carts and a different discount to people who browse the sites and favor items.  In both cases, browsers visit the sites but do not purchase.  I am still offering a "thank you" discount to people who do shop in an effort to develop repeat customers. In the meantime, I'm closely monitoring statistics to track the number of sales and use of discount offers.