If you're old enough, you probably used to marvel that digital cameras
could show a picture right after it was shot, eliminating the need for a
trip to the photo store. Now, they look nearly as dated as fax
machines, as smartphones allow instant sharing of photos through the
magic of wireless uploads and Facebook.
President Barack Obama likely has a few more "friends" after a town hall
at Facebook headquarters Wednesday, but the real winner may be the
medium of social networking itself, which commands not just the
attention of politicians but now an appearance from the president.