Scorned lovers have been around almost as long as lovers, but they used to write poetry. Now, with the added fillip of social media, it’s a marketing opportunity. In May, a newly divorced woman in Superior, Wis., held an “X-husband” yard sale of her former spouse’s stuff, including an SUV spray-painted with the word cheater. In July, another woman followed suit, with a forensically worded sign that read, “Husband left us for a 22-year-old. House For Sale by scorned, slightly bitter, newly single owner.” Her accompanying website, greatfamilyhome.com, drew more than 2 million visitors. And the home sold.