Amazon just announced that it's acquired comiXology. ComiXology is a digital comics platform. It is available via the web and they make apps for Android and iOS where you can purchase comic books and read them on your device.
Comic-Con International 2012 will be occurring this week, July 12-15, in San Diego. Comic-Con is a yearly event that started in 1970 as an event that was strictly about comic books. It was earlier called the San Diego Comic Book Convention.