This is a Nigerian 419 Scam, also known as
Advance Fee Fraud. Its widely known as you can see from a Google search for
"Nigerian 419 Scam". Its also very easily identified.
Check this site for more detailed information:
Quatloos
The best thing you can do is immediately report this account user to
Site Admin. Admin can delete the account and also ban the use of the IP address to create new accounts. This will stop the user from spamming others. Kotikkk, writing a review is not the best course of action in these circumstances. One nukes the source of the spam.