ecards ecards ecards

So BeN and I were having a conversation about eCards. What exactly is an eCard? Is this the proper format? An intro with a media player, bio, tour dates, and alot of external links? Is this? No intro, a media player, and a healthy mix of internal and external sections? Is this? Some fun animation / interaction but the meat of the content is actually the music. Or is it that marketing terminology has gotten out of hand and really eCards are these things and nothing more??