I do not have an account with Oanda. I searched "spread" on their forum and found this message.
http://fxtrade.oanda.com/community/fxmessage/ultimatebb.cgi?ubb=get_topic;f=17;t=005744#000000
http://fxtrade.oanda.com/community/fxmessage/ultimatebb.cgi?ubb=get_topic;f=17;t=005744#000000