Actually in Feb 2011
ebay Trust & Safety closed all known accounts used by this person for shill bidding, misrepresentation, and false identities.
And then in Jan 2014
ebay Trust & Safety again closed more than 40 of his malicious buyer accounts used to place false bids, leave false negative feedback, send threatening messages.
But
ebay does not really vet the accounts, allows multiple accounts, and certainly looks the other way as long as they benefit. The oversight they were doing 4-5 years ago was abolished when several of the larger stamps dealers, including some I consider reputable, complained strongly about the oversight processes. The issue was that there was no transparency at all, the reviewers were anonymous and sellers had virtually no way to fight any review. It was a horrid oversight approach but instead of trying to improve it they just walked away and did not replace it.
And then we also have the larger auction houses selling to him, but while they know what he is doing is not good for the hobby there is little they can do.
Buying online is buying 'sight unseen', without the stamp/items in hand it is a pig in the poke. Many hobbyists research the stamps, but many do not research the seller. Add to this our egos, the desire to treasure hunt or 'find a bargain', false confidence in
ebay's return policies, and bad transactions can abound.
Education, especially concerning the seller, is the only real weapon in the war against online stamp fraud.
Don