when i was a newbie i traded full sized spoos, lumber, coffee, OJ, and get this, would place market orders for currencies during reports.
To make it even worse, this was in the days when it was all pit trading. Sometimes it would be 10 minutes before they called with my fill (no email then either), and i wouldn't know my price till then. Market orders were safer cause with limits, often wouldn't know if i was even in the market.
Amazing it took me as long as it did to blow my acct.
Jay