Upstart online brokerage site Zecco had an unfortunate April Fool's day snafu that they are claiming was an honest mistake. Users logged on to find larger balances than they should have, sometimes millions of dollars extra, and many of those users started trading with the nonexistent money. Happy April Fool's Day. "... when Zecco realized it, the company apparently started to force sell, even at a loss, charging the losses to the customers along with a '$19.99 broker-assisted trading fee.' Oops."