It might seem like every day is "Nostalgia Day" on the internet, but November 15th is the official holiday according to popular photo-sharing site Imgur. The page, starting very early in the morning, has been flooded with images from better and simpler times. Times when you needed to update your computer with a CD-ROM, times when we didn't have cell phones. A time when green Skittles were palatable - and lime. We've put together some of our favorite of the nostalgic images, but for more (and more specific) time travel, head on over to the Nostalgia zone. You won't regret it.