Don't send cash, unless you are meeting the seller in person!!! It can't be tracked, and there's no method to verify if the seller has received it.
You could sign up for a Paypal account, or decide not to buy from him.
If the deal goes bad, you should have some method of recourse, and Paypal (though cumbersome) offers that, especially since you can back the Paypal purchase with a credit card.
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Dan
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Engineering * Bowling = a fun and practical application of rotational kinematics.
Bowling Nerd Herd (TM) Member
Edited on 6/2/2008 7:34 AM