Stewart Butterfield co-founded the popular photo-sharing site Flickr, which was acquired by Yahoo! in 2005. His resignation from Yahoo! in 2008 was marked with an artfulâ€or simply vague, depending on your viewpointâ€letter that continues to make the online rounds.
Stewart explained that it was meant to stimulate the mundane lives of Yahoo!’s human resources department. He also claimed that the letter contained no metaphors. Though it was intended for resignation, and “tin may be another way of saying web-based businesses, its meaning is open to interpretation. Plus, it could make good material for a Toastmasters Club meeting. Metaphors aside, the references to metal are appreciated.