Spammer no1 opens a thread about a great opportunity - in this case "THE PAYPAL 6 DOLLAR MONEY-MAKING METHOD" Spammer no 2 drops by and asks for information regarding this wonderful opportunity. Spammer no1 leaves a link to the scam site.
Simple. Business. You should know about cons and scams - right? You being an expert in international finance.
You will also notice that the original spammer has had his post deleted by admin.