My sister got a disco themed musical animated free ecard, with a hilarious little guy dancing on it. Everyone likes funny ecards, particularly when they are keyed to their personal interests. The best thing about free animated musical ecards is that you do not need to know a lot about computers to make use of them. Anyone who knows how to navigate the web can pick and send out a free animated musical ecard on some of the more popular sites. They really make it easy for you to do the hardest part of holiday shopping – picking out a card – from the comfort of your own home…