Looks like 419'er are using instant messaging to get people now! Funny conversation that a friend of mine had. Worth the read.
http://www.merchantsoverseas.com/wwwroot/gorilla/funny419.txt
(Friends name changed, but engrojie_adams is the real 419'er.
Too bad your friend cut the guy off. Could have been fun to lead him on and let the authorities nab him. He might have tried to swallow his flash drive during the arrest!