How can a seller remove negative FB?

[lord--doom]

I recently bought a counterfeit item, a Nintendo controller  - a confirmed fake, they're a good imitation but many ways to verify.

I left negative FB as a warning to others, by the next day the seller somehow removed it. This is plain wrong, they sell fake good and still show up as 100% positive. How is this possible?

[sandypebbles]

Because you chose to violate eBay policy by leaving a false positive 

And in the process, eBay more than likely pinged your account for the violation