Unfortuneately, this happens alot. As a safer practice, simply start getting tracking or delivery confirmation. I wont ship out of the US due to not being able to get delivery confirmation on air mail.
ATTENTION EBAY SELLERS- ADD THIS PERSON TO YOUR BLOCKED BIDDER LIST ! >
> NAME: MATTHEW BUNNEY
>
> EMAIL ADDRESS- snipped-for-privacy@hotmail.com
>
> EBAY USERNAME- illusionsofgranduer
>
> SHIPPING ADDRESS-
>
> =A0Lachlan
> PO BOX 5352
> Victoria Point QUEENSLAND 4165
> Australia
>
> The above mentioned person is buying items on Ebay, paying with
> Paypal- then after he receives the item, he tells Paypal and Ebay he
> did not receive the item- he then reverses the Paypal payment, and
> keeps the item, then leaves the seller a negative feedback.
>
> He also has made his feedback "private" so no other sellers/buyers can > read it.