Are you clever enough to pull a 419?

I don't know if Nigerian scammers read blogs but if they do I have an idea for a scenario for them:
1. send one of the usual spam letters (late widow of Sani Abacha, wife of Rwandan farmer),
2. send another letter signed by a Nigerian official (or even a UN official of another nationality) requesting cooperation with the authorities in uncovering the scammer from no. 1 above, earning a hefty reward in the process,
3. if anyone catches on, make them actually send money to no. 1 while delaying payment from no. 2.

Or maybe I can send the idea to this guy although he obviously does not need it.

My feeling is that if the other things reaching my mailbox work this one would, too.