Are you a single mom and ready to mingle? The thought of the bar scene could be intimidating, and the pickings at the PTA meeting are slim. Dipping a toe in the dating pool could be a little easier if you start online. Online dating has exploded in popularity in recent years. More than 40 million people in the U.S. alone report using online dating sites, and more than 20 percent of Americans who report being in a serious relationship have met their partners online. Sites like eHarmony and Match.com ...