Have you ever sent an email, and just as it was going on its merry way, you realize you misspelled something or you sent it to the wrong person. Now you can take advantage of that delay to “undo” the message.br/br/a href=http://www.techcrunch.com/2009/03/19/gmail-gets-a-panic-button/read more/a | a href=http://digg.com/software/Gmail_Gets_A_Panic_Buttondigg story/a