The Martin Agency and JFK Library launch another trip to the moon, this time, as a tribute to Neil Armstrong. Together they created the celebrated We Choose the Moon campaign, and now, on the heels of the late astronaut's recent memorial service, they created a site that once again makes the 238,900 mile voyage, but this time, it's powered by tweets. People who tag their messages with #onesmalltweet brings the site's rocket closer to its destination.