Send this FREE Martin Luther King, Jr. Quote eCard to a friend or family member! Send free MLK ecards to your friends and family quickly and easily on CrossCards.com. Share an animated MLK eCard or a cute and funny ecard with your family and friends, it’s easy! Find that perfect MLK card, add a personalized message, then press send! That's all it takes to brighten the day of a friend with a FREE eCard! CrossCards.com – Free Christian inspired online greeting cards.