There's a good chance you've seen a classic GIF and wondered just where it came from. But where do you start looking if the answer isn't obvious, and you don't want to comb through a dedicated website? If you use Twitter, you just have to ask. Filmmaker Matthew Cherry has launched an informal #GifHistory project where he'll track down the source video for a GIF, whether it's by himself or with the help of others. The source of that blinking reaction GIF (spoiler: it's former Giant Bomb staffer Drew Scanlon) may be a quick tweet away.