Lots of mainstream media outlets offer readers or users the ability to upload photos and video, but then they make it so cumbersome and layered in legal verbiage about copyright and liability that very few people do it. And virtually none make good use of Twitpic or YouTube or any other media-sharing site, because they are afraid (or their legal departments are afraid) of releasing their content into the wild where people might do unsavory things with it, like posting it to Twitter.