Twitter continues its march towards being taken seriously as a social network with today's update to its mobile app that brings some interesting new profile additions. For starters, header images. With Facebook and Google+ beginning the trend, it seems a social network can't have just a profile picture anymore. Everyone who's anyone has a profile picture, and a hero image.
Curiously, the header images can only be added via the mobile app itself. The background photo that you chose for your Twitter profile a billion years ago and promptly forgot is not used. Also, just going to app settings won't get you to the dialog to add one.