Brendan talks about teasing the 419 scammers, an act known as “Scam-Baiting”.

Some well-known scam-baiting site (against 419 scammers) include 419eater.com and scamorama.com (some funny jokes there).

But if you decide to play with fire, his recommendation is absolutely correct: Use disposable email addresses and do not reveal your personal information. Some common sense which may not be common to some.