Say goodbye to the door-to-door Mary Kay lady of the past. Please welcome the new work-from-home woman. Mothers from all over the country are becoming high-profile "influencers" and powerhouse saleswomen. With massive online followings, these savvy moms are creating mini-empires in shockingly short time, and racking up billions in sales in the process. Propelling this trend is the rapid growth of social media.